Being lonely is one of the most painful emotions you can feel

Feel like I’m finally acknowledging this after 25 years of living. Just feel so much pain when I’m alone with my thoughts. Like everyday I feel like I’m so close to crying. If I’m in a group I can pretend I’m fine because I’m surrounded by others and taking in their energy but when I’m by myself it’s a completely different story. I feel hopeless, useless, unimportant, and just sad. Idk how to get out of it because I’ve been this way since I was a little kid.