I'm hurting her, and i want to stop

Hello all, I need help to understand why i do things the way i do. I have been married for 3 years and we have a small child together along with a step son which is from her previous relationship. The main thing is that i lie to her sometimes about things. I can honestly say, that i don't do it all the time. I feel in my heart that when i do it is to protect myself from "whats coming". I'm not the arguing kind of guy, i prefer everything to be stress free. So when i do something and she questions me, i rather brush it off with something that will keep the mood good for the moment. Even though, deep inside, i know it will come out and make things worse later on. I want to stop, and be totally honest with my wife no matter what the outcome may be. I love her very much and i know i've hurt her with some lies. She say's that she doesn't trust me anymore, and i have to justify every action i do now with proof that i'm not lying. I can accept that, but i need to help to quit it all together.. I'm thinking about counseling, but will it really help?

Hi, Jay.E! If you find a therapist who can help you figure out why you lie and also help you deal with those issues, it could work. Your wife will probably appreciate the effort and maybe she'll trust you more.
How are things?