Mental health

It sounds like you're not facing your emotions. Speaking from personal experience, I become the most angry and decline when I push down my feelings and dismiss them. The anger that comes out is an outlet for the emotions I try to put a lid on. What are you not facing?

Figure out why you'd feel that way and then what's in your control. Set goals and work your way backwards to the present and take one step at a time to get there. This won't be a quick fix but you'll feel as if you're heading in a direction you want instead of going through life aimlessly. Life is a journey, but it's better to have destinations you want in mind.