When we get stuck in a project, the issues could lay on the project or us.
For the former, switching to a different project might help.
For the latter, we should fix our own issues as otherwise no project will work out.
It is not always clear where the issues are.
But if someone keeps on switching projects, it could be a sign of individual instead of project issues.
Even if a project does not work out, it is usually better to pivot by continuous transforming the ideas during progress, instead of discontinuous switch to a separate project without coherence.