I have read about giving as one way to be blessed.
Giving can come in form of anything; it could be giving of your time to a course; talent and gift, resources and so on.
I am sure of one thing however, giving of anything can increase your own happiness and good feelings, but is giving a factor to becoming wealthy? I am aware of the Forbes list of the richest, I am yet to hear any of them attributing his wealth to giving away if his resources.
Yes, because in this life miracles tend to happen to those who help others. And giving to others can make you wealthy not on money but can give you a wealthy personality.