If something is not working in your life, these are simply the only two choices, and neither is more right or wrong than the other. Both are equally valid, so choose the one that works best for you. No shame. No fear.
Also, ignore sunk costs. How much effort you’ve put in in the past does not matter. What do you want to do from today on, and what will it get you? Choose what will make you happy in the long run.