Be careful when you say that you will never change your mind about something.
Be careful who you let into your life. And be careful who you cut out of your life.
Be careful of others; many times people who deserve love the least are the ones who need it the most.
Be careful of yourself. If you don't take care of yourself, you can't take care of others.
Be very, very careful when you use the word "forever." Forever is a very, very long time. Nothing lasts forever.