I don't know how I survived. I sort of wish we had had the Internet when I was young. Although, I'm pretty sure my parents wouldn't have let me spend much time online anyway, and I probably wouldn't have had much privacy.
When I was a kid I used to go for long walks, long bike rides, I read A LOT, both fact and fiction (probably saved my life), the library was my second home, wrote stories, listened to music although my choices were not many since music cost a lot back then, played the guitar and the lonely nights when I was awake but had to pretend I was sleeping, I listened to shortwave radio with headphones.
When I was a young adult, I played games (really simple but hard ones) at my pre dos computer, watched a lot of TV (When I was a kid we only had TV from early evening to not very late, and as a young adult, the channels I had stopped around 2 - 3 am), talked on the phone a lot, especially with friends who lived in other cities, even made a phone friend through a support group, never met him just talked on the phone and started to get loads more music (Still vinyl recods).
So I managed to be a book/TV/phone addict before I became a computer addict. If I had had a computer back then and Internet, I think I would have felt better, on the other hand I had to do more and be more creative.