Finegold offers some humorous but very good practical advice in the form of New Year's resolutions on the USCF site. Some of the comments offer good advice, too, so be sure to read them also.
1-I won't get into time trouble
2-I won't move quickly when I think my opponent has just blundered
3-I will play the same regardless of my opponent's rating
4-I will stop taking draws against better players when I have a good position.
5-I will try a new opening, and not play the same stale stuff I have played for 25 years
Read the complete article...