All that you have mentioned can bring hapiness but that happiness lasts for a short time only. Material things cannot give true happiness. there is still a longing in your heart. there is still something that lacks in your life. People has no contentment. They have all the things in life, wealth, power and possessions but they still crave for more. People are naturally greedy. To be happy you must be contented on what you have. Be a blessing to other people especially the less fortunate. Use what you have to give glory to our Lord, to the one who give you those blessings.