Caffeine is a drug. Stop while you can.
For me, it caused headaches, bad short term memory, and overall tiredness. The only good thing that you can get out of caffeine is a brief moment of energy and focused thought. That's all. Right now my hair is thin :<
Day 5 of breaking my addiction, and it's making me really tired XD Be prepared when you quit, because it will take about two weeks. I recommend cutting down on the amount of consumption little by little. Like buying those 8 ounce cans of soda is a good way. And drink plenty of water. You might want to get dark chocolate and green tea, but consume them moderately.
It can be hard, but you can do it. It's important to be conscious of it at all times. Don't be a consumer whore.