There are no obstacles if you have a strong desire to do something which is very pleasing to Guru and Krishna. Although the mind will find excuses (because that is the nature of the mind), we simply have to become stronger and defeat all the excuses that the mind will offer, with the strength of purified intelligence. We should understand that Krishna will help us to overcome the obstacles. However, if we try to overcome the obstacles by our own endeavors alone, we will always fail. A devotee always has to be dependent upon the mercy of the Lord, which is one of the symptoms of surrender.
MKV, Vol 2- Pg 10 (Q/A Meeting With Disciples, Divnomorsk—6/10/01 )