One day, I felt the Lord say to me "Any real success in life is proportional to the Life you have drawn from God in prayer and relationship with God”. The greatest weakness of the flesh is its own natural ability.   O yes, it has strength and the flesh has power.  It can build, run, think and contrive, but it all ends in the natural world. Nothing of the flesh goes through into the spirit realm to move men eternally or to move Gods hand on behalf of sinners. The flesh has no ability to affect men's heart for good.     The flesh finds it hard to do nothing in its physical world? Jesus asked his disciples “Could you not watch one hour?”  Just waiting can seem like a waste to the natural person. Gal 5.17   The flesh is at war with the Holy Spirit of God. The flesh is smart, conniving, determined, self-sufficient and that’s what makes it dangerous. Our flesh’s strength is our weakness!   God says “Cursed is the man who trusts in a man who makes flesh his strength..... but blessed is the man who trusts in the Lord”

Friend, if you know that the flesh is dead and therefore determine not to rely upon it, you have a weakness that God can turn to strength.  Strong people are people who know they are totally weak to do His will in the flesh so they know desperately that they need Him to do His will through them.