It’s hard to write everyday, believe me, I know, you’re preaching to the choir. Almost every writer out there can sympathise with your struggles. We’re only human and we all have people we care about (and for), jobs (unless writing is your job, in which case you’re very lucky!), studies and other obligations.
But writing every other day is not enough. Writing is a muscle and, just like any muscle, it withers with misuse.