I'm thinking of ghosting my so after I had this epiphany
What made you want to ghost him.
My friend isn't living my new lifestyle style, and besides, he's older than me
Regardless, are you sure that ghosting him is the way to go? It can be hurtful to completely cut someone off with no explanation.
Nah I'm going to show him how much I can boss up by ghosting him.
If you are no longer interested in this person, then you should let him know and break up with him gently, without assigning blame.  Disappearing from someone's life will not make them respect you, it will just leave them confused and possibly worried.  Nobody deserves that.