Use a Kanban board, offload every single todo from your brain unto that board. When you are done with your active tasks you can sleep in peace. If you stil

Use a Kanban board, offload every single todo from your brain unto that board. When you are done with your active tasks you can sleep in peace. If you still find difficult, maybe you shouldn't go to bed directly after coding. Start earlier and do other relaxing activity prior to going to sleep. The usually blah blah blah, exercise, shower, stay away from electronics, don't drink alcohol or coffee, etc