Hebrews 11:1 states, " Now faith is the substance of things hoped for the evidence of things not seen."
Oftentimes, we lose our ground because we have an unstable foundation. Through trials, heartaches, disappointments we are not as stable as we used to be. Why? Because we have lost our faith in God. We started having faith in the things, situations, and our desires, not on what God promised. Have you ever heard people declare, such and such is my husband or wife? God could have promised them a mate, but they have put their personal desire for the object of their affection on the Word of God. So, when it turns out not to be that particular person, they find themselves being mad at God or losing faith in God because "their word" did not manifest. So, trust God and His specific promise to you and try not to add anything to it. Remember, when you have faith in the giver of the promise and watch His word manifest in your life, you are on stable ground and you win!