Enjoying life requires that you endure hardships. But wait, exercising is tiring, studying is boring, eating healthy is no fun. There is no enjoyment at all.
Hardships bear fruit only when you stick it out long enough, when you have a strong body that keep hospital at bay, when you have a lot of wisdom to do what you must do, and when you have a good health to earn a good wealth.
Conversely, you could choose to stop struggling and start enjoying while your body gradually weakens, your learning capacity diminishes, and your health deteriorates. In the end, it becomes too late to gain back what you wish to enjoy.
To live is to suffer. Have the courage to suffer for what's best for your life.