It's interesting that you have awareness of your usual manner. Have you been told that by someone else, or this is your own awareness? Being around others who are compassionate can help you to learn in a practical sense how to be more compassionate. Sometimes our behaviour patterns have been inculcated in us from childhood by the general dynamics and accepted codes of behaviour in the family, and they are hard to break. If you want to change your own patterns, you can try to do so in small ways where you feel comfortable and not awkward. You don't have to do big gestures that make you feel as if you are not your self. Once you get used to small changes, you can then work on other small changes, step by step.