For every project you take on, any commitment you make, you’re agreeing to a longterm relationship. Other people will depend on you, habits will form and roles will shape.
It’s like adopting a pet, as a colleague and I say to each other sometimes. Are you willing to walk the dog? To feed it and give it water and be willing to spend the energy, time and money if it gets sick?
I say that to myself when I want to start something new, and I find it helps influence my thinking. If I think of the longterm requirements and still want to move forward, then I will. If not, well, there’s no use to start at all. (One way I’m working to say no more often).