how to be mature

since i m heading back to work tomorrow, i really should improve my maturity. once again, i want to thank my friend for the advise today. however, i still did a research on how to be mature.

• Tone down your fashions
• Use manners. Try to be courteous without being stuffy or inflexible
• Have a genuine good attitude and a goodwill towards others
• Have confidence in yourself and speak from your heart. If you think that you have a good idea, share it. But think before you act. 
• Think before you speak
• "Be slow to anger"
• Learn to apologize sincerely for your mistakes, inappropriate words and actions towards others.
• Listen, slightly nod, and say little things like, "Oh" or "yes," to let them know you are listening
• Remember, when you speak, use facial expressions and be funny as usual, but be more serious in conversation.
• Be helpful
• Talk about mature things to people
• Keep in mind, around kids, squat down to their size when you talk to them
• Try to use proper grammar and spelling whenever you write, including instant messaging and online games.
• Keep an open mind 
• Learn to control your temper.
• Don't swear,
• Accept compliments gracefully
• Take criticism gracefully, too
• Be mature and polite online, too.
• Observe your friends
• Write out your goals and plan how you will achieve them

i believe this list is pretty useful. hopefully, i see the improvement within a short period time.