The verse tells us that you must love our fellow ‘like yourself.’ A person naturally sees things from their own perspective and from their side of things, thus, in part, why they are more sensitive to themselves. However, if we can try to sometimes see things from our fellow’s perspective, it will aid us greatly to love them as we are supposed to and treat them properly. For example, before we say or do something that could, Chas V’Shalom, be offensive, think about how you would feel if someone said or did that to you. . .
And the same goes for other situations: If others are, Chas V’Shalom, not so nice at times, don’t just jump and dislike them. There are always reasons behind things -- so try to think from their perspective: Perhaps there are things going on in their lives that aren’t so pleasant, may Hashem help them, and so they are bitter. There have certainly been moments for ourselves like that! And there are many other possible things. (Tal U’Matar).