Does smoking make you miserable after awhile?

After a long talk with a friend, I decided to quit smoking weed in the hopes that it helps me with my overall mood. Yesterday night was my last joint; I haven't felt any urge to smoke until now. It's getting pretty late. I worked on my master thesis all day, and now I feel as if I deserve a joint. I don't even have any questions; I just wanted to vent. I told my smoking buddy I quit; he just replied with "LOL." I just want the old me back, the one who got excited when somebody asked him to go out. Nowadays I'd rather sit by my window, smoke and be miserable on a Saturday evening when everyone is out doing stuff. I don't know, man; it's just, idk. All I do is smoke and think about the past; things I could've done, things that could've been.

On the contrary, maybe it's not even weed that's making me miserable. I'm afraid my misery doesn't stem from weed; I hope it does.

I'm 25, I travelled a decent amount around the world, I almost finished my university, I go climbing a couple times a week, and yet I don't feel any feeling of accomplishment.

I hope this quitting will help tho