What others have already said; an exit strategy will help you get by, your time is your investment, so have a plan. Say after a year doing your current job, you've saved enough for that {insert goal, ie deposit for IP}, then you get out and start on your more passionate work related path. Set yourself up now for the time when your income will be lower.
I am in a similar situation, while working I am undertaking external study for a field that I will much more enjoy, but be of lesser pay to begin with, to know that when I have finished my course I will be starting a new journey, keeps me motivated to get through the **** I deal with now!
I am in a similar situation, while working I am undertaking external study for a field that I will much more enjoy, but be of lesser pay to begin with, to know that when I have finished my course I will be starting a new journey, keeps me motivated to get through the **** I deal with now!