i have personal limit for maximum 3 active projects at the same time:

- work: regular 8hour work to earn money

- workdays side project: i do this before and after the regular work (1-4 hours per day), on workdays only. (usually a "may get rich" project)

- weekend side project: on sat and sun, only. (usually a fun/charity project)

the rules are strict:

no work on projects not scheduled on that day.

not even think about the other projects.

no more than the three active projects. if a project wants to start it has to wait until the active finishes or the active must be cancelled (not suspended).

thees few rules allow me to have side projects and enough time to complete each. and guarantees that only the best projects get the spare resource: me.