First, find yourself. The moment you find yourself you find the aim of your life. The real aim. The aim whose success is guaranteed. The aim that is sure to bring infinite joy and indescribable peace.
Right now, you are lost. The very fact that you are asking me the aim of your life is proof enough that you do not know yourself. Result: you are always dependent on others for guidance. Life has given you enough wisdom to know the aim of your life. Find that wisdom within yourself. Then, your will never be misguided.