How do you know truth

I was listening to one of the coaching replay is with Brooke and she says she would never in a million years volunteer with kids because that’s just not our thing. and she said that the caller was having this conflict because she was denying her truth. My question is dash dash isn’t not liking to be with kids just a thought? So how do you decide which thoughts are your truth that you should accept and embrace (such as declining to keep the kids at church and offering to help in other ways, thus not complying with other people’s manual for you) and when should you say not liking kids is just I thought and I should do thought work on that and then keep the kids at church?