the best advice i can try to follow, and that i advise others to take up:
stop being a little bitch.
now, you may think me insincere. but let's think about this for a second.
if we all stopped being bitches, can you imagine how much better life would be? how much more we would get along? it would actually probably contribute way more to society and friendships and personal relationships, and what not.
and if you're a girl, you're not excluded. you can keep this in mind as well.