Greetings!
One thing we cannot do by ourselves is to help ourselves in doing the will of God. We cannot use our strength nor our heart or desire to do the will of God.
However, all we need is the holy spirit of God to help us do His will. Also, religions without the holy spirit cannot also help us to do the will of God, nor make us to forsake our sins.
It's only the true religion that can help us to do the will of God. The will can only be done through the help of the holy spirit of God.
Proverbs 16:9 A man's heart deviseth his way: but the LORD directeth his steps.
The above scripture is a testament that there's nothing we human can do without God through his holy spirit that has the capacity to help us live in the will of God.
1 Corinthians 3:16 Know ye not that ye are the temple of God, and that the Spirit of God dwelleth in you?
Here we were being told that the spirit of God dwelleth in us and what that means is that it's through this spirit that we can live the life of God through the holy spirit.
In conclusion, we should all know that we do not have the capacity to do the will of God, but by the holy spirit. So, we should not think we can live the life of God on our own without the help of the holy spirit of God.
Thanks for reading.