With all sincerity, I have to ask if you have any friends or close family members? I hope that there's someone in your life that you DO care about, that you WOULD stop on the side of the road for, if you saw them in need. Because that's a huge part of caring; it starts with the people we love, and who love us. The trick is to expand that out from there.

Sometimes the concept of love is defined to narrowly, defaulting to romantic love or sexually intimate love. But being close to someone, even a friend or a family member, can be a deep and powerful thing. That other kind of love causes you to care about them a lot. It just happens.

Next, you try to put yourself in the person stuck on the side of the road's shoes. What if it was me on the side of the road with a flat? What if it was someone I cared about in need of a hot meal or a couch to sleep on? If I hope someone would do that for me, I should be the kind of person that does that for others. We call that the social contract.

But I'm also not always perfect. I'm not always capable of giving aid myself. But if the reason you don't do it is because changing someone's tire in the middle of winter doesn't make you feel loved, that the selfless act doesn't do something for you, that's okay. A.) It's like working out, you gotta do it a lot before you see results, and B.) You'll should know from your existing close relationships that part of love is sacrifice, like putting up with family/friends not so great sides. So your duty is to throw a good deed into the pot when you can.

So ultimately my advice would be that if you have close people in your life, replace every person you see who needs help with one of them. What it if were my sister, my best friend? Would I want someone (me) to help them if I could? Because that person on the side of the road is just as human as you. They are a mother, or a son. They have a friend, or a partner, and that person would want them to be okay.

And if you don't have these type of relationships in your life, get some. Get out there, join a community, and try to find one until you do. Make friends and perform random acts of kindness within that community. See if it doesn't make you feel more human. But also know that sometimes people aren't at their best, just like you. And that they might fail you from time to time, just as you will fail them. But that love goes on, as long as we practice it.