Thinking about yourself:
There is no harm in thinking about yourself and that no where makes you selfish. Thinking about what you like, what you want; this will always make you a strong personality so don't give a second thought before thinking about yourself :)
Dreaming:
Dreams will open way to new destination no matter what you have achieved but remember there is lot more to come so never stop dreaming
Expressing your feelings:
To be happy its important to let out what you feel despite of what others will think or how people will react. Like when we were kids we never thought how will others react when we will say something or ask about anything and that's the reason we were more happy. So don't hold back what you feel.
Taking stand:
Its your life and what you feel and wants to achieve is worth taking stand for but yeah you yourself should think of all the aspects of good and bad; and be open to suggestions. Maybe you can't make everyone trust in your dreams but at the end its your life.
Saying "NO":
Growing up doesn't mean putting your values aside but its always carrying your values and adding to it. Due to peer pressure or social influence we stop saying "NO" even when we want to; but rather then accepting everything, try to think what is right and value your thoughts. Never hesitate to say "NO".
Accepting mistakes:
There is nothing wrong in accepting mistakes. Everyone commits mistakes but accepting it and trying to learn from it is a big thing.
Being thoughtful:
Being considerate about people around is a sign of happiness. This doesn't mean unnecessary interference but this is about assuring the person for good life. And trust me this will always give you pleasure of happiness.
Appreciate what you have:
Just give it a thought that there are thousand people who wants what you have because they don't have it. Always remember what you have is precious... and feel confident about it by appreciating it adding more to it.