How can you ween yourself off energy drinks? i find myself drinking 3+ cans a day and cant seem to stop myself?

You may require the energy at your job.  Switch to low calorie energy drinks if you can like "5-Hour Energy" or zero calorie"Red Bull."  Caffiene is the only stimulant in these and many people drink lots of coffee.  Try never to go above 3.

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  Spend a week writing down all sources and amounts of caffeine you consume. Don't forget chocolate.
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  Step 2
  Restructure your current caffeine intake into predictable intervals, without reducing the amount of caffeine consumed in a day.
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  Step 3
  Strategically reduce the about of caffeine at each interval. For three days, have 75% of your normal caffeine beverage. Replace the other 25% with a decaffeinated alternative -- water if possible. If chocolate is part of your ritual replace with non-chocolate candy or trade a regular size candy bar for a "fun-sized" -- or a higher quality truffle.
  
  If you've been drinking coffee, black tea usually has about 3/4 the amount of caffeine. If you like tea, an even swap would be good at this point.
  
  *Note decaf coffee/black or green tea all still contain caffeine. These substitutes are fine at this stage, but ultimately you'll want to give those up too.
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  Step 4
  Once the three days have passed, reduce to 50% caffeine. (on the tea method this would mean switching from black to green tea.) Do this for a day or two.
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  Step 5
  Give up all caffeine for 1 day, then consume at step 4 levels. Repeat giving up for 2 days, then 4 days. By now you should be able to stay off caffeine with little or no withdrawal symptoms.

You need to develop an opposite habbit. For example, whenever you feel like taking another energy drink, eat something with little calories like fresh cucumber.

This seems a big problem. You have to reduce the quantity.. Otherwise you will be addicted.

I feel for you. I used to do the same thing and I ended up getting sick a lot because I hardly ever slept. Just cut back slowly and your body will return to normal.