Control the things you can.. Sage advice when engaged in a battle with cancer. There are so many things that are out of your control. Cancer treatment (and its energy zapping side affects) can dictate when you eat, how you eat, where you spend your time, and with whom you spend your time.
As you regroup to take on the Big C, control the remaining precious unscripted hours. How you spend this time should be nonnegotiable, and should be all about you. Well intended friends and family that want to plan your free time, can over extend your reserve energy, and this is not helpful. Spend that precious energy reserve on whatever activity relaxes your body, calms your mind, and renews your spirit.