As you go through life focus on what you have and be thankful that you have. When you keep this positive attitude you will never feel like you are lacking and your life would be richer and fuller as a result. If you spend your time wishing for things that you do not have and truly do not need then your life will always feel like it is lacking something. You will never be satisfied with everything you do and obtain have no matter how much it may be. Some of the happiest people on earth have few material possessions and wordly goods but they truly believe that they are blessed and rich beyond measure because of what they do have in their life.
There are two types of people in this world: those who appreciate what they have and those who always want more. It is up to you which of these types you will be, and it all depends on perspective. Even if you have little, but you are surrounded by good friends and family and you have enough to get by, then you have everything you need to be thankful. You can have more money than you can count and still have an empty life that has no joy or meaning. When you are truly thankful for what you have you will have more in your life even if you are financially strapped at times because you will view what you do have in a much different way and you will be content.