Clinical psychologist Jordan Peterson has a lot of interesting things to say about this:
Why it's so Hard to Sit Down and Study/Work
https://www.youtube.com/watch?v=IFmQ5waavJY
How to Always Achieve Your Goals - No Matter What
https://www.youtube.com/watch?v=Rvc9zguunhc
Sort Yourself Out
https://www.youtube.com/watch?v=v0Qm8I2cCAE
Clean Your Room