Well its nice to see there are some wise men among us all.
It doesn’t matter how you give as long as you give, usually 10% of your income will do nicely, and give to only people who inspire you and not just any one, for example I went to a restaurant last weekend and there was this waitress who really looked after me and wife and made us Both feel good, so I just gave her £20.00 in her hand which she was very happy, and also made me feel good to see a nice smile on her face and last week I received 3 new window cleaning contract.
Don’t take my word for it and just try it, I know it is so hard for many people to understand this, but just try it.
You will be much happier person.