Explain to Me

Why do I let the happiness of someone else dictate how I behave? I know that I am in the right, and that all I need to do is continue down this road, but someone being upset with me makes me stubble my steps. I need to just do what I set out to accomplish all along and let her be upset. She will always convince herself that she was right and I was wrong, but as long as I can look myself in the mirror and know that I've done the right thing I will be ok.

Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O Lord, my strength, and my redeemer. Psalm 19:14