i gave up caffeine for 5 years and i have just recently started to drink it again
i started drinking decaf coffee to start with and caffeine free cola and then got rid of the coffee after a while as i wasnt interested in drinking it anymore

make sure you get a good tasting decaf that the caffeine is taken out through water filtration. Nut Shack used to have a good decaf
it can be done and as long as i had a hot drink alternative on hand with me- it was easy to do
its more habitual than addictive but dont go cold turkey or you will get head aches etc from withdrawls!