For me, I cycle through two different periods.
The first is intense individuality. You know, the 'I don't need anyone cause I love hanging out with myself'.
The second however, is the complete opposite: utter loneliness. That's when I start living in my head and imagining my life wasn't as boring and traditional as it is now.
Lately however, I've been trying to break the cycle. Getting more involved with what my friends are doing, finding my own hobbies, addressing my addiction to social media. I'm already on the look out for a summer internship, and other activities. Doesn't mean I don't still feel really lonely at times, but I'm working on making my life as interesting as I used to imagine it was.