When you want to do something, the only thing to do is to do it.
This may seem almost laughably simplistic, but if you want to do it, then do it and if you can’t do it right now, do something that moves you closer towards doing it.
If you’re not doing it, then pause for a moment and consider if that really is the thing you want to do.
If it isn’t then do something else.
If it is then do it