>>300945As far as appearance,
don't smother your skin with skin care products especially retinol at a young age. Basically, use minimal skincare products. Don't stress your skin out. Don't rub your face going outwards (towards the ears) it loosens the skin. (try to avoid rubbing skin harshly at all.
Stay active, stay at a healthy weight. Don't deprive yourself of nutrients. Have a healthy, fixed diet and exercise routine (one that won't stress your body out) this applies to both appearance and overall health.
Avoid smoking, drinking, and doing any kind of drugs. Avoid stress the best you can. Get enough rest. Always care for your body after exercises. SHOWER after exercise to avoid acne.
DO NOT POP YOUR PIMPLES! You WILL become crater face when you get older.