For fear of getting emotionally hurt, don't become too attached, don't seek a deep friendship. Live in the superficial moments that constitute friends as 'acquaintainces'. Stay in your room, you never know what will happen to you on the outside. Its safe there, you can be trusted. Never rock the boat, (in any situation) if someone says something, aggreably encourage them, even if it doesn't sit right with you. Don't ever talk about things that are important to you, because they may not be important to others, and they may find you boring.
Don't ever look good, because someone else might be feeling ugly, and they will feel even worse if you are looking great. Don't dress in the fashion too much, but don't be out of it either, on the one hand if you dress in the fashion, it mightn ot suit you, and it may eat all of your money. Be yourself. Be original, customize clothes to make yourself original.
Always encourage others. Talk about whats been on TV, whats important. Don't talk about anything that will cause a disagreement, again, don't rock the boat.
Don't fall in love, it can hurt. You miss them when you're apart. Similarly don't ever get yourself caught up in deep friendships, the ones where you would drop everything just to make them smile, they may be using you, or manipulting you, it will also take up too much of your precious time.
These can be some disturbing ideas that can, at times creep into our minds. When I've been in deep friendships, I've missed them so much when they're apart that it physically hurts, but then you appreciate the fact that you had that time with them, and enjoyed their company. Although it hurts at the time, you know that you've lived.
Don't be scared to scare yourself at least once each day. Try something new, say something nice to someone that you would ordinarily avoid. Do something small, something out of the normal run of things that would make someone else stop and say thank you, or make someone smile. This is not supposed to be one of those mushy things that you pass on, and I haven't simply just copied and pasdted it, these are my ramblings that mean something to me, and I want them to provoke others not just to think, but into action.
The greatest stagnation is procrastination.