Facebook Has Changed

i had been a member since the early days i met up with friends i hadnt seen for ages and family people i knew so i could say what i wanted to when i wanted to now people i barely know or have met only once add you and i feel bad ignoring them i recently got a new job and before i had even started i got friend requests for all the people i would be working with i was wary but didnt want to seem offish now i have difficult situation at work am afraid what my old friends will post or what photo horrors i will be tagged in from back in the day also i feel like i cant speak on there or show my location i do have genuine freinds on there but i get anxious signing on and im too scared to derfriend the colleagues from my new job because it would add to the atmosphere arrrghhh!!!