Black goes with everything, looks sexy and is a very slimming color. I get it, I have a lot of dark/black in my closet too.
The secret is to change it up. Black pants with a vividly colored top. Black top layered over a bright T, or black tank top under a see through lightly colored top. Metallic belts on black dresses, bright heels to finish your look.
Black is a standard run-to color that is appropriate for nearly every event or reason from first date to night on the town (maybe not a wedding though, lol). The secret is changing it up in unexpected ways.
first thing I would do is get scissors, cut the cloths, and make a giant tent in you're room of all the cloths I cut, and have a sleep over, then in the morning take you shopping for having no style and I'D make sure you would have something sex on