Who Made God???

Ok so I wanna belive that there is a god and jesus but its hard to belive that when I find it hard to belive that there is a god because how can something sooo powerful create itself,its impossible right??If he didint create himself then who made the person that made him,see its just weird because a humans cant make themselves right now imagine something sooo powerful that can make a whole nother world in a second make it self I need help its just so hard for me!!!!!!!