Staying Motivated to Exercise

I have exercised 4 times this week. Better yet, I have sweated for at least 20 minutes 4 times this week. I am feeling really tired today. Usually, I do this for 2 weeks and then something happens, and I "fall off the wagon". If I focus on the positive, I may be tired today, but I am feeling so thankful. The sun shined. My daughter had a really fun St. Patrick's Day parade at school. My son gave me a kiss. When does the extra energy kick in? I know it is too early yet. Patience was never one of my virtues although I do have a healthy dose of determination (read STUBBORNESS). Let me know what keeps you motivated to exercise, to be healthy.