How do I tell people I haven't talked to in several months or even years that I miss them and want to try and start things up again?

It feels weird not knowing how to initiate a conversation with someone, seeing as all of my current friendships only exist because I initiate everything. Which is fine with me, but I don't get why I don't know how to tell someone I deeply miss that I want them back in my life.

It's weird. I never thought I'd find myself missing them let alone wanting something close with them again.

I'm not sure what I'm feeling tonight but all I know I can do is distract myself. The ginger won't do me any good 'cause he's got his loser friends he fits with much more perfectly than with me, the polak is still in high school and has no idea that I would grab the moon for him. 

Maybe I all I need is to have one day where I don't feel like all of my friendships in life failed because I was afraid to admit I cared about the person.