ENERGY VITAMINS ?

Ladies I am currently starting my fitness journey. I recently had a baby 9 months ago and I am 164lbs.. I really want to get to 130 at least by the end of the year. Specially because my back is always hurting and my head and my sex life is going down the drain. But I lack motivation or the energy. What r the best energy teas or vitamins or drinks u guys drink to be energetic the whole day ?