Being a man of God is easy when it comes to what all it entails. BUT when it comes to realistically doing what you're asked it's not easy. God asks you simple things. Trust him when times get bad. To fear not when you're worried. To not be anxious in anything but give all things to him. To tithe 10% of your income. So why is it too easy to slip up and forget those promises? Pretty simple. We are weak in the flesh. We make mistakes. We fail always. We operate in sin or are surrounded by it daily. A simple saying I use, "I walk in the spirit, not in the flesh, I want treasures of heaven, not the wages of death." God offers us a grace. The Bible says he remits all our sins. The word remit meaning He totally erases it as if it never happened. You are a valued and loved by God. His grace and love is unmerited.
There will be times where you fail, you will indefinitely mess up. So stop trying to be perfect. Realize you are imperfect. Focus on God's love. His promises are always yes and AMEN, He will never leave you nor forsake you. In every situation, whether it sucks or is amazing give thanks. It's not easy as a man of God but you can do it. Don't give up on yourself because God never gave up on you.