The Lord God is my strength;
He will make my feet like deer’s feet, And He will make me walk on my high hills. Hab 3:19
Habakkuk was able to declare this only after he prayed the prayer of faith in the previous verses. He rightly declared his strength was not in fig trees or vines or fields or flocks, but only in the Lord God.
Habakkuk is not talking about a pleasant day of rock climbing, he knows the path is very challenging and very dangerous. Yet, he thought of deer running on high hills, never losing a step and never failing. Also, deer positively dance and leaps on hills.
So, Habakkuk declares that God is his strength, and he knows that God will enable him to do that he could never do on his own. “High hills” here means a difficult, challenging place. Habakkuk says that God “makes me tread on my high places”. So, the God who enabled Habakkuk will enable you and me if we depend on God for every circumstance