If you run on the ISTJ pattern, you don't drift through your life so much as administer it. You like things done properly, in the right order, with the right materials, to a standard you can stand behind. And that is exactly why a temporary situation puts you in a strange holding pattern most people wouldn't recognise. You don't refuse to commit because you're flighty or distracted. You refuse because committing fully to something you've privately labelled 'not the real thing yet' offends your sense of how effort should be spent. Why properly furnish a flat you'll leave in two years? Why build deep routines around a job that's clearly a stepping stone? Why put down roots in a city you didn't choose and don't intend to keep? So you live correctly but lightly, doing the minimum maintenance, waiting for the legitimate, settled version of your life to begin before you'll apply your real thoroughness to it.
The problem is that 'temporary' has a way of lasting. The interim job runs five years. The stopgap flat becomes the place your children's heights are not pencilled on the doorframe, because you never quite let yourself believe you lived there. You are a person who finishes things, who honours commitments, who would never leave a real obligation half-done — and yet here you are leaving years of your actual life on a provisional setting, treating them as a corridor you're hurrying through rather than rooms you're allowed to inhabit. The waiting feels responsible, even prudent. It is actually a slow, orderly forfeit of the one stretch of life you were guaranteed to be present for.
You're applying your standards to the wrong question
Notice what your thoroughness is actually doing here. You apply an exacting standard to whether a situation deserves your full investment — is this the right job, the permanent home, the settled circumstances? — and until that test is passed, you grant the present a kind of provisional status. You'll keep it tidy and functional, but you won't pour yourself in. The standard isn't wrong. It's pointed at the wrong question. You're using it to decide whether the circumstances are worthy of your effort, when the question that matters is whether you're getting full value from the time, which is the one resource you cannot replace or re-order.
Think of it the way you'd think about any system you're responsible for. A machine running at half capacity 'to save it for later' isn't being preserved; it's underperforming now, and now is the only window it has. The years you spend in a place don't become real once you've decided they count — they were always real, always being spent, whether you committed to them or not. The proper, dutiful move is not to wait for circumstances to earn your investment. It's to recognise that the clock is running regardless, and that withholding effort from a running clock is the actual waste.
'Someday when things are settled' is an unmaintained plan
You trust plans. You like a clear sequence: get the right job, then the right place, then build the life properly once everything is in its correct position. And 'someday when things are settled' feels like a plan because it has the shape of one. But look at it the way you'd audit any plan at work — with a deadline, owners, and defined steps — and it falls apart. There's no date. There's no definition of 'settled' you've actually written down. There's no point at which the conditions are met and the real life is scheduled to begin. It is the one item on your list with no due date, which means in practice it never comes due.
An ISTJ would never accept this vagueness in a project that mattered. You'd flag it, scope it, and pin it to a calendar. Apply that same discipline here. Stop treating 'when things are different' as a stage that arrives on its own and start treating it as what it is: an open-ended deferral with no trigger condition. The honest version isn't 'I'll commit once it's permanent.' It's 'I am choosing, by default, not to commit to any of the time I'm actually living.' Said plainly, in your own practical language, that's not a plan. It's a plan to keep not deciding.
Your feelings about the in-between are real data
You tend to file the discomfort of a provisional life under 'beside the point.' The cramped flat, the job that doesn't fit, the town with no one you know — you treat the flatness you feel about it as a soft, irrelevant thing to be endured until conditions improve. So you don't act on it; you wait it out. But that low-grade flatness isn't noise to suppress. It's a reading off an instrument, telling you a real cost is accruing right now — not in some imagined worse future, but in the present you're declining to invest in.
You don't have to become sentimental to take that reading seriously; you just have to treat it as information, which is something you're good at. The signal isn't saying 'wait for better circumstances.' It's saying 'you are under-living the circumstances you have.' And the fix is squarely in your wheelhouse: concrete, repeatable, structural. Build one routine here you'd be sorry to lose. Learn the place properly — its streets, its people, one good thing it does better than anywhere. Treat the temporary as if you'll be here for years, precisely because you don't know that you won't. Acting on the data isn't a feeling. It's maintenance.
Commitment is a decision, not a verdict on the circumstances
The deepest version of this for you is that you've made commitment conditional on certainty — you'll fully invest once you're sure this is the permanent, correct setup. But certainty of that kind almost never arrives in advance, and a temperament that waits for it will wait through the whole thing. The people who get richness out of a temporary place don't get it because the place turned out to be the right one. They get it because they decided to be all the way in while they were there, and the decision is what made it count.
This is not a call to abandon your standards or commit recklessly to the wrong things. It's a call to separate two judgments you've fused: whether a situation is permanent, and whether it deserves your real presence. The first you often can't know. The second you can simply decide, the way you decide to do any job properly rather than half-heartedly. Commit to the two years in the stepping-stone role as if they're the only two years you'll get — because they are. Furnish the flat you'll leave. Make the friends you might move away from. Bloom in soil you didn't choose, on purpose, because that's where you happen to be standing, and standing somewhere lightly forever is no way to keep faith with your own life.
You are not a person who leaves things half-done — so stop leaving your present half-lived. Waiting for the permanent, proper version of your life before you'll fully commit isn't prudence; it's the one duty you keep deferring with no due date, while the years it would have covered pass anyway. Treat where you are now the way you'd treat any obligation worth your name: thoroughly, properly, all the way in. Not because it's permanent, but because it's real, it's running, and it's the only stretch of your life you're certain to be present for.