Loving yourself is not reflective of your being selfish. Loving yourself in fact can be understood as an act of showing your love to your loved ones.
Of course, you are taking good care of your body because you do not want to acquire a disease which can stop you from doing your tasks at work. When you stress yourself too much, there is no way to go but putting yourself in danger, which is not good and truly not worth it.
Hence, you should realize that having a healthy body and good-conditioned mind should be attained by loving yourself. Allotting your time to exercise or do any other healthy habits will certainly help big — that you should know. It is not just for yourself, it is also for your loved ones.
Well, you can also refer from lifestyle magazines. Surely, you can pick from these a lot of useful tips to become healthy and happy.