It is extremely difficult, but while serving here in a loving spirit, I wish to say that we do not all love ourselves. We tend to love our 'self' and not our 'Self' Loving our selves is an extremely positive quality and invokes the feeling from within to love others also without condition. The heart of the Saint bleeds even for the wild birds and flowers.
Life mirrors what we are, and the greater our inner purity, that is to say, less hate, lust, deceit, selfishness, ego, attachments .... I could go on. But the less we harbor of these things, the more empathy and oneness we will feel for all God's children, our brothers and sisters: mankind. It is extremely difficult to make inner progress, without feeling that we should do unto others, as we wish for our selves. The heart must be receptive for the Higher Light to descend. Grace is very real, it is not a joke, but ingratitude and enmity, separation and division, keeps it at bay.
Neighbour as demonstrated by Jesus with the good Samaritan story, is someone in need. We run into countless people with different needs every day. By the way, giving can be done on many planes: a smile, prayer, psychically, financially, physically .... there are countless ways.
Finally, it is an insult to a Man who we say came and died to love and help us, if we cannot have an intense faith and believe in both Him and Paul when they ask us to be perfect and imitators of their lives. Difficult yes, but certainly possible and inevitable.. They lived to show us this. Hope this helps.