why do people have no contentment with their life?

I am going nuts right now. I am sooo dissatisfied with my life.Why, you ask? It is a lack of service. I just moved from a church where I cleaned, cooked, taught, catered for 150 at our Women's Conference, and other events,went monthly to Prison Ministry,weekly to intercessory prayer to.....attending church once a week for one and one half hours. It is selfish and I am feeling it. To be in the place of a servant, as Jesus was, is the best place to be.True happiness comes from helping, serving, pleasing someone besides our self. If you are smirking at my answer....go bake a dozen cookies and then go find someone to give them to. See how they act...how you re-act. Blessings..

it's part of human nature--we olwez crave 4 mor..juz think of d nventors and scientists, dey hv restles minds..and we as persons we hav unending wants and demands..lyf is teaching us d value of sumthing d moment we lose dem, such rison y we hv regrets..we tend 2 serch 4 d beter sumone/sumthing juz 2 realize dt we olredi hv mor dan d best of wat we dserv..i dnt knw d true key 2 hapines, ol i knw is being GRATEFUL of wat we hv at d moment wud make us happy..

but most of the times int leads us into something bad which will cause our lives to turn upside down...now what im wondering is, is it wrong or not to have contentment on what we have?