There's a lot of taximen in the graveyard and none of them wishing they'd spent a few more hours in the cab. By point of fact, none of them are wishing anything because they are deceased. If you enjoy doing nothing do more of it. However, if you do want to motivate yourself to work I'd suggest building a structure around that but don't set unattainable targets. Then, keep a cash book and record your hours and takings, that way you can see numbers in black and white that prove working is beneficial financially. Exceeding easily achievable targets ought to help with motivation.