Generally speaking, you can tell how much money a person makes by observing how they respect their time. If you want to increase your earning potential then you need to follow the 3 P's of Time Management... Protect your time, Preserve your time, Prioritize your time.
It is important to become outcome driven, understanding what you want to get out of the time you are investing in an activity. The clearer you are about this, the less likely you are to get pulled off track by someone else's needs. This doesn't mean you never offer help and support to others, but you need to be prepared to make a clear distinction about what you have time for. You will never have enough time for everybody, but you will always have time for somebody. Prioritize yours.