Numerology folds every number back into one to nine, so 1 isn't first place — it's the start of the cycle, the position with nothing before it to refer to. That decides everything about 1: a starting point has no precedent, so you have to judge for yourself; and it has no company, so you got used to walking ahead alone early.
You'll recognise it here: when nobody in the room is moving, the one who finally moves is you, and you're a little annoyed it had to be you; you have an instinctive resistance to following a method even when the method plainly works; and you find it hard to call the credit the team's — not because you want to grab it, but because you genuinely remember taking that step yourself.
Running well, 1 is the starter: you turn a thing that doesn't exist into one that does, and nobody can do that part for you. Blocked, it goes two ways. One is toughing it out — 'I can do it myself' becomes an identity, and asking for help starts to read as failure. The other is idling: with nothing worth opening, the energy turns to small stuff and you get irritable without being able to say why. What 1 has to learn was never collaboration technique. It's admitting you need people — unusually hard for this number, and unusually valuable.