I do know a lot of dogs go thru a fear phase. I think I would just take things slow. Jackson has always been a shy dog since I got him. He's the kind of dog that loves his family (my grandparents, mom and dad, siblings, cousins, aunts, etc) even if he barely sees them. But strangers he will always shy away or be really timid. He has gotten SO much better lately. He will be 2 years old next month and will now willingly go up to people and sniff them, and be really content being petted (he will have his setbacks of course) but he's been making me so proud lately! Anyways, I accomplished this through conditioning him to enjoy strangers. I always carry treats with me and ask people that want to pet him to give Jackson a treat, and I started bringing him to my cousins little league games so there were a ton of kids that would give him attention and treats! I would just start carrying treats everywhere with you and praising him when he does right, and that people will not harm you