Leverage analogy: think schwerpunkt in blitzkrieg. If you amass all your tanks on one sector of the front and crush the opposing line there, then you will have more of an impact than if you spread the same force out over a wider area.
There doesn't seem to be an easy way out of this career problem.
There seems to be a problem with whatever you will do.
I imagine the success chance would go up quite a bit if one does basic things like being persistant and reading up on the wisdom of others.
If this happens with 2 or 3 start ups you would have lost a lot of money and time.
not sure if that's good or bad