Question 112: Relax

I have been training in ITF Taekwondo for 4 years now and I'm a red belt but I'm struggling to keep going on as I don't know if taekwondo is for me. My instructor is really good but I have been getting told for all the time I have been there that I am too tense and need to relax. Also I'm not a fan of free sparring but I understand it is part of the training. Should I maybe move onto try something else or should I try and fight through?