It does not matter what it is that you have to share, as long as you do share it. If the problem is that you do not know what you have to share, then yours is a steep climb to the plateau of productivity. It is through sharing – and sharing alone – that any single human being is going to reach their full potential, their nirvana. If you imagined that you had reached nirvana already – or your zenith, if you like – then you can concede that you were quite possibly mistaken. There is a way to go yet before anyone gets anywhere.
Sharing your experiences is helpful. Sharing your perceptions is optional. Sharing your cynicism is unwelcome and sharing your destructive criticism is pointless to you in the long run. It slaps you on the back of the head on its return journey. There is always something to share. A smile. A truth. The last Rolo. A private joke. The list is endless. You do not need money to share your wealth.
Appreciate sharing. Both the giving and receiving. Sharing takes time. Time in this world is a gift. Feel free to give of yourself as often as you can manage without depleting your reserves or exhausting your resources. There is no point in that. If you are no good to yourself then you are not much good for anyone else. You must have others with whom to share (sharing with yourself is not quite as useful), so ensure that you are good to both yourself and the others you come across. You need their input.
If you did not learn to share as a child, perhaps now is the right time to teach yourself how it is done. It is a life-skill you require.