You are often more sensitive than you realize, and you probably notice that your physical energy has higher peaks and lower valleys than that of many other people. Napping is a very good thing for you to do when you're tired; you may need more sleep than most people do. It's important that you honor your body in that regard by resting when you need it and taking regular breaks.
Assertion can be a real issue for you. You are probably better at acting on behalf of others than for your own benefit. If you don't feel comfortable expressing yourself forcefully, that energy can easily turn into passive-aggressive behavior, something that you must constantly be aware of. It's far too easy for you to wage a cold war instead of simply expressing your anger or other strong emotions. When you don't feel comfortable with your emotions or problems in your life, it's also very tempting to try to escape those issues by way of drugs, alcohol, or any other addictive and damaging behavior. Since you enjoy physical sensation as well as needing a break from everyday life, the challenge is to find ways to indulge these parts of yourself safely.