You do not have a willpower problem. You have the wrong schedule.
Everyone has their own clock, and most schedules are built for somebody else. The Inner Clock sets out your chronotype, your energy curve across the day, and the hours that suit each kind of work. Live on your own rhythm, not on someone else's.
When you wake naturally, when it is hard, when you work best. Without comparing yourself to anyone.
Out of the answers comes your chronotype and the energy curve everything else rests on.
What to do and when, plus a sleep and light plan matched to your rhythm rather than a general one.
The report is written from your own answers, so before the test there is nothing to buy. The test is free and takes a few minutes; at the end of it you have a result, and the full report is taken from there.
The test is on the institute's site. The basic result is free; the full report is paid for only once there is something to read. If you want to go through the result with a specialist, you can do that in an online session.