One of the major perks of being a photographer is that you get better because of feedback from friends, family, clients and your facebook fans or elsewhere. In some way you're like a giant little kid asking how do you like my photo how do you like my photo. That's one of the perks of being a photographer, getting that attention regularly and getting to work with beautiful people.
The one bad thing about having friends and family check out your photos are positive feedback, they're not going to give it to you straight. Don't believe me, put an average picture up and see what responses you get.
As a photographer when i post an okay picture i usually get a few likes or maybe a single comment. When i post an amazing picture it gets shared and gets dozens of likes and an average of 6 to 8 comments. When i want real commentary i will ask other photographers to give me real feedback and then when they do i ask them to give me real feedback and usually i get it.
That's how you're going to get better, but getting real feedback and adjusting your style, composition and technique. Again, stop being so terrible and get better.