Your goals should scare you a little and fit on your calendar a lot.

A goal needs two qualities that seem to pull against each other. It should be big enough to produce a flicker of fear, since that flicker is the sign it would change something, and it should break into blocks of time you can genuinely book. Fear without a calendar stays a daydream. A calendar without any fear fills up with things that keep you exactly where you are.

Put the first three hours of what you want into real slots this week, with days and times attached. If it will not fit, shrink the version and leave the scary part alone.