I think this is unavoidable to an extent. You surely cannot roleplay a personality you are unable to empathize or relate to on some level very well. That is not to say that you need to have at least vaguely similar experiences as a character. I think simply placing yourself in their shoes and emulating your feelings were you a person with x or y personality is the same as bleeding yourself into them.
Example:
You could have a savage and moral-free character who is everything you are not who simply behaves that way because they had a very troubled past. It doesn't necessarily mean that you needed to have similar feelings when you grew up, but just to imagine if you were a bit less of 'this' and a bit more of 'that' and THEN thrown into such an upbringing.
In any case, my good-natured characters likely all share the same moral traits as I do in real life as well as a degree of empathy. I must admit that my own 'bad' character has made me reluctant at times because my insides are screaming at me to be nice to others characters even though that is simply not his style. Other than that I don't think anything else bleeds through. I certainly do my utmost to avoid steering a character in the direction I want as opposed to the direction they want, as strong as the feeling may be.
Example:
You could have a savage and moral-free character who is everything you are not who simply behaves that way because they had a very troubled past. It doesn't necessarily mean that you needed to have similar feelings when you grew up, but just to imagine if you were a bit less of 'this' and a bit more of 'that' and THEN thrown into such an upbringing.
In any case, my good-natured characters likely all share the same moral traits as I do in real life as well as a degree of empathy. I must admit that my own 'bad' character has made me reluctant at times because my insides are screaming at me to be nice to others characters even though that is simply not his style. Other than that I don't think anything else bleeds through. I certainly do my utmost to avoid steering a character in the direction I want as opposed to the direction they want, as strong as the feeling may be.
Characters: Andre Winter (Hy'ur) / K'nahli Yohko (Miqo'te)