This very much depends on how motivated you are by external validation. For some people, the fear of losing social capital by not following through on a public commitment is motivating enough to accomplish stretch goals.

Source: used this technique to overcome my own procrastination trying to launch my first app as a solo founder. It worked, and I went on to raised a million VC to see if I could scale up the vision of a social goals app.

The downside of relying on external validation, as I learned the hard way, is when your self improvement startup goes down in flames, you really feel like a fuckup.