I have found the advice in this Andrew Huberman video to be helpful. Long version: [1] Useful clip from that longer video: [2]

TL;DR: motivation is a muscle that can be developed as long as your efforts to do so are voluntary. In other words, do the hardest thing that you can actually do, even if it is just pick up one piece of trash and put it in the garbage. Or wash one dish. The list of possibilities is endless. The idea is to face your discomfort, and as you do so repeatedly, your ability to do so increases.

[1] https://www.youtube.com/watch?v=8OHYynw7Yh4 [2] https://www.youtube.com/watch?v=BoutTY8XHSc