Is it possible to fully surrender to the will of God and yet perform our actions to the best of our potential?
In fact, when you surrender to the will of God and allow him to give you as much he thinks is good for you then you perform your actions to the best of your potential. This is because you will become free of anxiety, fear and negative results.
Even in Gita Lord Krishna says:
"Yogasthah kuru karmani
Yogah karma kaushalam"
Meaning: When you perform your actions while being in union with God your actions become perfect.