>>34548
>Is this what getting old feels like?

No, you just depressed. Getting old is worse

Considering advice, I guess you need to find some entertaining activity first. It may be hard though, especially if you don't really want anything. Drinking isn't solution, so don't even try, because it is fun only when you already ok.

Human being is also pretty complex organism, but most people don't understand it and still live with outdated ideas of "body" and "soul" (or "mind", whatever). But in reality there is no strict differentiation between your body and your mind, i.e. when you have health problems, you'll have mind problems too. So, you can't overcome psychological problems without fixing (at least partially) physical problems. Even proper diet matters.

And visiting a doctor (at least for tests) is always a good thing to do. Maybe it is deficit of some vitamin or functional problem with organs. For example, thyroid problems may lead to depression and tiredness.

Personally, I don't believe that any advice may help though, because advices are generic and obvious. Recipient already knows everything that will be said to him.