Time is free, but it's priceless. You can't own it, but you can use it. You can't keep it, but you can spend it. Once you've lost it you can never get it back.
When you pass from this life you will be judged by the accomplishments that you have reached, and the contributions that you have made to mankind and the world. If something in life is worth having or doing then working hard for this result is an accomplishment in itself. If you are given everything and you never have to strive for anything then you accomplish nothing in life because you have no goals that you want to reach. Some of the most treasured things are those that you have had to work hard for and that are not easy to obtain. Working towards a difficult goal will provide self esteem and confidence, and when you finally accomplish your goals you will be a better person as a result of the struggle and hard work that you have put in.