Having some tough days

I have been having some tough days due to extreme heat. I feel isolated from people in general, old resentment coming back. Too scared to talk to people, whenever I think about people I remember all the time people rejected me. When I extended a hand for friendship, people gave me a bag full of advice and shooed me. It's so sad, a few months ago a person shooed me and I know she is a suffering soul too, maybe right now she has a better life but there was a time she went through a lot, but I don't feel any empathy for her, all I feel is the rejection. And this utter hopelessness and the feeling of falling. I know it ends some day but I just don't know how long. I want my heart to flood with love and I will work toward it.