What is it that you have to surrender?

Anyway everything belongs to the Divine already. But when you think that something belongs to you, then I say, ‘Let go’. When you are holding onto something so tight, that is when I say, ‘Hey, relax’. Relaxation is called surrender; it is nothing else. If something is bothering you in your head, offering that botheration is surrender.
It is just like offering aahuti (the act of making prayerful offerings to the sacred fire). So whatever bothers you or troubles you, offer that as aahuti to the Divine.
That which you cannot handle by yourself; that which has become a burden for you; that which you are tired of carrying on your head, just put it down and let go! That is what is meant by surrender.
Otherwise what is there to surrender? Your body belongs to God. Even your mind belongs to God. Everything belongs to God. But you think it belongs to you, Just let go, relax and smile. Letting go, relaxing and smiling is what the meaning of surrender is.
In Buddhism, it is said ‘Buddham Sharanam Gachhami’, which means whatever burden you cannot handle by yourself, offer it to Lord Buddha, or offer it to God, or offer it to the Guru, or offer it to anyone who is dear to you. This is for you to feel that there is someone who belongs to you and is very dear to you, and you are very dear to that person.
I will give you an example.
A child, when it knows that mother is at home, it feels so comfortable. The child will roam about here and there and play happily. But when the child does not see the mother, and mother has gone somewhere, then it starts looking for her and starts crying.  Though nowadays the children actually become happy when they find that mother is not around! Then they can do even more mischief. But this happens when the children grow a little older.
Small children often keep a watch to see whether mother is around, isn’t it so? One eye will be on the mother. This is because the child feels comforted to know, there is someone for them, who is sitting there.