If you want to be committed to working out, you must establish a group of manageable goals and keep track of your progress. Just as you would set goals for your work or business, do so with your fitness. Before you begin exercising regularly, you must sit down and set clear, specific, and measurable goals.
You should start with cardio and allow your body to warm up. A quick 5-10 minute cardio session with prepare your body for your weight training season without exhausting yourself. Another reason to do a short cardio session is that you don't want all your energy to be used up before you start your weight training.
If you are going to the gym on a regular basis and not seeing any improvement in physical strength or appearance it usually as to do with nutrition and training. Most people need to have a routine or fitness plan in order to see any significant improvement or results. Another reason could be that you have unrealistic expectations for the amount of effort necessary to see your desired results.