It is not enough that one surrenders oneself. Surrender is to give oneself up to the original cause of one's being. Do not delude yourself by imagining such a source to be some God outside you. One's source is within oneself. Give yourself up to it. That means that you should seek the source and merge in it.
Yogas chitta vritti nirodhah - (Yoga is to check the mind from changing) - which is acceptable to all. That is also the goal of all. The method is chosen according to one's own fitness. The goal for all is the same. Yet different names are given to the goal only to suit the process preliminary to reaching the goal. Bhakti, Yoga, Jnana are all the same.
Know that the eradication of the identification with the body is charity, spiritual austerity and ritual sacrifice; it is virtue, divine union and devotion; it is heaven, wealth, peace and truth; it is grace; it is the state of divine silence; it is the deathless death; it is jnana, renunciation, final liberation and bliss.
You impose limits on your true nature of infinite being. Then you get displeased to be only a limited creature. Then you begin spiritual practices to transcend these non-existing limits. But if your practice itself implies the existence of these limits, how could they allow you to transcend them.
From where does this "I" arise? Seek for it within; it then vanishes. This is the pursuit of wisdom. When the mind unceasingly investigates its own nature, it transpires that there is no such thing as mind. This is the direct path for all. The mind is merely thoughts. Of all thoughts the thought "I" is the root.
Keep the remembrance of your real nature alive, even while working, and avoid haste which causes you to forget. Be deliberate. Practice meditation to still the mind and cause it to become aware of its true relationship to the Self which supports it. Do not imagine that it is you who are doing the work. Think that is the underlying current which is doing it. Identify yourself with the current.