Having a professional design your exercise programs is not vital. What is important is that you select a program that exercises various muscles: chest, thighs, hips, back, shoulders, abdominals and cardiovascular. Including the basic body movements: squat, lunge, lift, push, pull and twist is also important. These are the natural movements your body makes in doing all its work. Varying exercises in your routine is important.
Warm-ups and days of rest also play a vital part in creating yourself the best workout routine.