Do it quickly after you have reached a goal. The rewards are most effective if immediate. Plus it creates the break you want right then, not tomorrow.
Allow time for yourself when doing for others. Sometimes we can get so wrapped up in doing things for others that we bypass ourselves. This can feed stress build up. Treat yourself to a self moment periodically.
Do it often. This can depend on the size of the reward. Do small things often and larger ones less frequently but regularly.
Vary the rewards. Remember they are meant to be special. But of course only you can decide this. If taking time for sipping a cup of coffee each day is enjoyable, fine. But do add some variety also.
Break the routine of your tasks. Maybe allow yourself one part of a day to not do what you had scheduled.
Space the rewards somewhat evenly with in your tasks so that you don’t get stuck in long periods without an attitude lift.
Also, space the work out evenly within the rewards; don’t allow yourself to put off the more difficult parts to the end. You will be setting yourself up for stress and meltdown, or avoidance!
Don’t punish yourself for having to do what you have chosen, you can choose to enjoy the process.
“One characteristic of winners is they always look upon
themselves as a do it yourself project.”
— Denis Waitley