Learn, as soon as you can, that you cannot depend on anyone but yourself. By the time you are grown and no longer need me, there will be a level of expectation that you should care for yourself and not search for a husband to do it for you. Spend your younger years preparing for the future as best you can. Enjoy the moment you are in, but always be looking ahead. Don't obsess over money, but never forget that you need it to survive. Be innovative.
In your personal relationships, burn down the bridges that don't need to be there, but always keep at least one of them in working order. Enjoy the friends you have for the time you have them. Tell people you care about them- and mean it.