What is it that you're doing with your energy? Are you getting done the things you say you want to do for yourself, or are you distracted by the demands from others?
We say we want more time and energy but what if what we really want is less demand for our attention. We can't always be available, and that should be okay. If you're being pulled away from your self-care plans the onus is on you to say no and turn to your needs. It's not that your friends, job or family don't care about you but if they don't see that you care - truly care - then why should they?
Remember, your well-being is important if you want to continue (lovingly) being there for those who matter most. Let them see that you care as much about yourself as you do about them. Teach them how to honor their needs by being a good example of someone who manages stress and stays on top of diet, sleep, hydration, and exercise.
Be honest with yourself. If you had more time and energy would you really spend on it yourself or others?