I'm not sure that one can entirely, but the key (IMO) to coping is, in a word: distraction

The Most Powerful Pain Reliever Revealed

distraction as a pain reliever

If you're religious/spiritual, you may find some solace in the 'Serenity Prayer'; if not, I believe there is still some value in the underlying lesson/wisdom—worrying/obsessing about things we cannot change/control serves no purpose other than further harm to ourselves. The energy/effort is better spent on things we can change/control/influence, and we'll feel better about that. Life is (too) short and the clock is ticking regardless, with no time-outs/do-overs.

Self-Pity

I never saw a wild thing
sorry for itself.
A small bird will drop frozen dead from a bough
without ever having felt sorry for itself. —D H Lawrence

In my own experiences in coping with chronic illness (pain), knowledge and undestanding of what's going on in our heads/psyches—our shared humanity—has been more helpful to me than all the sympathy/empathy (pity?) and therapy offered.

The two concepts that come to the forefront are the Kübler-Ross model (as adapted/applied to chronic illness) and the Vicious Cycle (of chronic pain/illness, depression, anxiety/stress, insomnia, et al.) There are, of course, many others, from quotes to self-help. Laughter is important, as is keeping a sense of humor.

I can see I'm beginning to ramble a bit, and in peril of straying maudlin.

Doc