Nothing. If she or he is uncomfortable with me, I find another one.

be urself

Ok there are two possible reasons : 1- U may choose the wrong person that must be patient to teach u ..... or somebody who find time to speak to u ... 2 - u may don't give any interesting to his/her advices or instructions ...... or u may be lazy in learning the language ..... that is all and hope that i was useful for u :)