Don;t feel bad, I've had translucent teeth since I was 7.
Ain't gonna happen! There are some products that claim they can help remineralize enamel that has suffered demineralization due to early decalcification. Some of them do help. NOTHING will regrow dentin or enamel.
Enamel is transparent in color. If you're noticing this, then you probably have worn through the enamel/dentin on the back side of the teeth, resulting in the only the transparent edge of enamel remaining. See your dentist to find out what your options are for restoring this.