For my birthday I “planned” an unplanned day guided by the intention to not do anything that I wouldn’t enjoy repeating every day for the rest of my life. My experience was different than my intention, but close to it. I’m certain that my quantum self did manage to meet this intention in a good number of universes.
Set intentions and exercise your free will to meet these intentions. Decide what you want to classically experience an align your choices with those experiences. When you stray from your intentions, quantum sense your parallel self who didn’t stray. Notice how you feel. Gain joy and happiness not only from your classical experiences, but from your quantum experiences as well. Make choices to increase the probability that you experience futures you desire.