Hi Petrus.
Don't worry, almost all of us I think struggle with fear and there's no spiritual gain in knocking on ourselves or taking the guilt trip. Recognising the possibility means you are well on your way. Just see it, figure the right action and move on. There's only a lucky few who have been brave and skilful enough to overcome this.
It's not just a matter of 'one size fits all' compassion. There's a term used in the Shambhala Buddhist tradition: 'idiot compassion'. What it conveys is that either indulging others who are actually indulging in ego driven or foolish behaviours (e.g. through sentimentality, or political correctness) is helpful neither to ourselves or them. A lot of wisdom is needed to discern how we can help without damage to ourselves (doesn't mean we don't sacrifice in the right circumstances) while at the same time helping them out of their hole. (in both practical and consciousness terms)
Meaning that 'tough love' is often required, as is the wisdom to recognise when intervention won't help - that the person has to experience the negative consequences of their actions. There's a very fine line to be walked.
I'm a fan of little experiments. One of the barriers to overcome is the conditioned sense that giving out to others is not in our interest. It actually is (give and ye shall receive) done right, but done wrongly and you just get used and don't help the other. (pearls before swine)
Meaning that getting it wrong gets you used, getting it right means you give only what you intended, it helps the other and often pays back in totally unexpected ways. I've found that small positive gestures to others help us so much to build confidence that giving works.
On the reptiles Joe. I guess that one of the characteristics of the unconsciously but heavily ego identified human (the 'user') is the tendency to treat others solely as things or positive or negative contributors to the almighty 'ME' - to lose sight of the fact that beyond this they are people (or animals or other forms of life) as deserving of loving treatment as themselves....