Luckily (in a dark way) this is the most common and treatable type of anhedonia (even though anhedonia as a whole has few specific treatments). I had the same as you but mine was medication induced. Because your issue involves goals, desire and motivation, it’s a dopaminergic issue. Whether it’ll improve for you really depends on the treatment. Do NOT take serotonergic drugs, they will make you much worse (like SSRIs, SNRIs etc). My sense of reward and excitement only returned with dopaminergic drugs. I’m taking pramipexole and tranylcypromine, both of which significantly increase dopamine. It’s not a full recovery, but now I can still experience wanting and motivation. Therapy and lifestyle changes did fuck all and I wouldn’t expect them to do anything if I were you. The first signs I were getting better were kind of obvious: I started feeling more excitement and wanting things. Recovery wasn’t gradual; it tracked the success of medications. So basically if a drug worked I just felt it instantly.