Number 1
One in numerology is the number of beginnings. The one who goes first: makes the decision, takes responsibility and pulls everyone else along.
Personality and Strengths
One is credited with willpower, independence and the ability to act without anyone else's approval. It doesn't tolerate others deciding for it, and it feels at home wherever it can set the direction.
The second trait is speed. A One doesn't gather information endlessly: grasping the general picture is enough for it to start.
Weaknesses
The flip side of willpower is stubbornness. A One finds it hard to admit that the chosen path is wrong, and more often than others it pushes through to the end things that should have been dropped halfway.
The second weak spot is deafness to other people's opinions, which leaves it surrounded either by people just as stubborn or by those who silently agree.
Career and money
Anything where one person makes the decisions suits it: running your own business, management, direct sales, any work with personal responsibility for the result.
A One's relationship with money is simple: it earns money rather than saving it. The problems usually lie not in income but in the fact that it invests in its own ideas without weighing the risks.
Relationships and Compatibility
A One needs a partner who doesn't compete with it for the lead role but doesn't dissolve either. It works best with 2 and 6, who provide support without a struggle. It's hardest with another 1 and with 8: two leaders in one couple rarely get along.