L experience difficulty in ping other people, particularly on pavements/sidewalks or long corridors? due to?

your problem is you more than likely have a self esteem issue, my guess is that you rely fairly heavily on others, so become more independent and be happy with yourself it's hard at the best of time with stangers but be proud of who you are and what you have achieved, if it will help go to the gym or do something that makes you feel better, be comfortable with yourself then you will be comfortable with others