The term Devotional means means Devotee. When we say ‘Devotional’ a whole hearted submission is intended. This is not simple surrender but a surrender of the mind, word and deed. It is a realisation that all our deeds and words are done by God and the fruits of all actions shall be left to him and we always remember that He is the force in us that makes us live and act. The Lord is the refuge for all who are suffering from the bondage of imperfection in life. 

"If there is one term describing an essential aspect needed for success that can be found in all schools of spiritual practice, regardless of the methods prescribed and their scriptural foundation; one single aspect of approach or revelation of the Divine, the Self, the Eternal, the Perennial Ground of which all humans claim inheritance"

- Swami Sadasivananda Giri

“The ‘I’ casts off the illusion of ‘I’ and yet remains as ‘I’. Such is the paradox of Self-Realisation. The realised do not see any contradiction in it. Take the case of bhakti - I approach Iswara and pray to be absorbed in Him. I then surrender myself in faith and by concentration.What remains afterwards? In place of the original ‘I’, perfect self- surrender leaves a residuum of God in which the ‘I’ is lost. This is the highest form of devotion (parabhakti), prapatti, surrender or the height of vairagya…You give up this and that of ‘my’ possessions. If you giveup ‘I’ and ‘Mine’ instead, all are given up at a stroke. The very seed of  possession is lost. Thus the evil is nipped in the bud or crushed in the germ itself. Dispassion (vairagya) must be very strong to do this. Eagerness to do it must be equal to that of a man kept under water trying to rise up to the surface for his life.”
- Sri Ramana Maharshi