Am I boring / wasting my life

I have a good paying job, I don't like it and would love to leave but the salary pays for my lifestyle: I.e I can afford pilates, to go to Europe every year, pay for my car bills, live in a good area in a one bedroom apartment by myself. I can buy clothes (not too expensive) and I can pay all my bills myself.

I'm worried about retirement and throwing my job away to do something else and start again. I don't know what that would be though.

I've been living like this for years. I'm 36 female.

But I am bored. Really bored. And wondering if this is just life and if I should be more grateful?

Any advice? Anyone else in this situation?

How do I make life more fulfilling, more adventurous, more spontaneous. Take more risks.