[meristohm]

For doing things that are uncomfortable, I've found a habit of cold showers first thing in the morning to be helpful. I've heard this also as "eat the frog (and the rest is easier)", but I'm not that desperate, and we've done enough damage to amphibians.

Dean Spade's Love in a F*cked-up World is also helpful; starting with loving oneself and forgiving missteps/mistakes/failures might help you break through the barriers.