Do not envy others. To envy implies dissatisfaction with what has been given to you. Be contented with your own possessions, what you don’t have, you don’t need.
We all have a purpose in life. Find yours, and allow others to find their own. If you encounter obstacles and find they mar your progress, remember, they are there for a reason. Do not ignore them but accept them as challenges. It is better to fall down many times while attempting them, than not to fall down at all.
No task is ever given that is beyond your capabilities. What you have learned through difficulties, will be retained forever.
Strive towards perfection, even though you can never attain it and do what you do best without bringing harm to yourself or others.
Personal achievement is the acceptance of challenges that allow the outcome to flourish into contentment. Be yourself and allow others to see the real you, by allowing your true feelings to be known. Express yourself clearly and honestly. Listen to the beliefs and opinions of others, without passing judgement.

John Griffiths

http://www.poemhunter.com/poem/be-yourself-13/