[Emma_Goldman]

I think it depends upon what you mean by 'start'. It can be fruitful to experiment with many projects, developing them to the point at which you can make a reasonable judgement as to their value.

You're right that once you seriously commit to a project, you should generally follow it through. But then perhaps that's the problem: people aren't seriously committing to projects, just playing around with them endlessly in a strategic abyss.