You say you can't give up your holidays and its only thing keeping you going, but it is also the same thing keeping you in a rut. You have to compromise and skip holidays for maybe a year or two to help build up funds to move out, when i moved out (also from essex) to London i haven't been on holiday for 3 years but the funds allowed me to move out to where London where there are more opportunities.
You really need to figure out where you want to go/be, so you can figure out a path to getting there, i would advise you in seeking a careers advisor or maybe doing volunteer work in different fields to get a taste of whats out there and to get some experience.
You really need to figure out where you want to go/be, so you can figure out a path to getting there, i would advise you in seeking a careers advisor or maybe doing volunteer work in different fields to get a taste of whats out there and to get some experience.