1) Maintain a long list of large issues you need to resolve. 2) Regularly take a few of those items off the list and resolve to do them in a given g session.

1) Maintain a long list of large issues you need to resolve. 2) Regularly take a few of those items off the list and resolve to do them in a given g session. 3) When not working, take a real break. Do something else. 4) Exercise regularly. This is so massively critical for me that I can't overstate it. Regular exercise aids in focus, sleep and maintaining a positive mental attitude.