Don't just throw yourself into your work, plan some outings w/the children. Take a walk or go on a hike over the weekend, visit a museum or library, take in a movie. You and your children need some activities besides school and work.
When you get up in the morning, take a look around you. Mother Nature is doing a beautiful job of painting the next season w/vibrant colors and change in temperature. After a long day at work and then being w/the children, think about all that you've accomplished and then thank the man upstairs for another good day. Life is far too short to allow negativity to ruin it. You have a lot of positives in your life, i.e., your children, work, family and friends.
Think positive. A positive attitude draws people and good things to you.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
