I'll keep this short but I just haven't been feeling good since last night

I really don't know what I want to do with my future.

I used to want to get in to video game design/marketing or some aspect of the industry but for some reason I just gave that childhood dream up. Instead I went through a phase of wanting to be a music major but the level of competition for getting in to schools was something I wasn't prepared for so I gave that up and now I'm trying to be a physics major but I still haven't transfered out of community college, this spring is my last there thankfully. I'm really not sure what I want to do though

I also had my new boss at my job "lecture" me about what he thought good future jobs were last night. He wasn't directly saying "your an idiot son, you should do this" but that would have bothered me less than his "advice". He just kept going on about how physicists don't make much and apparently plumbers and kitchen repair men are some sort of gold mine because they get payed 200$ for service. I really wanted to say fuck you those sound like shitty jobs. Why would I do something that I don't enjoy. I don't care about making loads of money, I just want to live comfortably doing something I like.

I just smiled and nodded because he does seem like a nice guy and it was just that typical old person lecture you get but it just depressed me because I really feel lost in general in regards to my future and old men lecturing me about their money making schemes isn't helping

Truth is while I have a general idea of what I want to study, I have no idea what I want to do with my life and I hate feeling lost and unsure.

How do I make better plans for my future and find out what I want to do?