I agree that it's already nice and clear, not a bunch of extra stuff, and mostly grammatically correct. A few more suggestions:
Quote:I will always try to eat the right types of food each day.
You seem to be shifting tenses a bit -- I think you can leave out the "will". ("I always try to eat the right types of food each day.")
Quote: Having three to four well balanced meals every day which include foods from the four main food groups helps to keep my body feeling refreshed and healthy.
"Having three to four well-balanced meals every day, including foods from each of the four main food groups, helps keep my body feeling refreshed and healthy."
Quote:I also make it a point to drink plenty of water to avoid dehydration.
Before I begin the day I make sure to exercise at least ten to fifteen minutes, this helps the blood to start flowing to my muscles and loosens up my joints.
"Before I begin the day I make sure to exercise at least ten to fifteen minutes. This helps the blood to start flowing to my muscles, and loosens up my joints."
Quote:I will start out with some stretching exercises and will work up to more strenuous exercises like pushups and situps. At first it was difficult to develop this habit but now it just seems natural.
Same idea about not needing "will":
"I begin with some stretching exercises, and work up to more strenuous exercises like pushups and sit ups. At first it was difficult to develop this habit, but now it just seems natural."
Quote:Worry also has an effect on my health. Taking time daily to relax and ponder on some happy thoughts is a great remedy.
"Worry also has an effect on my health. Taking time daily to relax and meditate on some happy thoughts is a great remedy."
or
"Worry also has an effect on my health. Taking time daily to relax and ponder some happy thoughts is a great remedy."
The "ponder some happy thoughts" part is a bit awkward, but not too bad.
Craven got the last part. ("not to worry" is also a little awkward, but I couldn't think of anything better that went with the simplicity of your word choices in the rest of the essay -- and I like simplicity!)
Oh, and welcome to A2K!