The book, "The Science of Getting Rich," by Wallace Wattles, states that charity is to be given ONLY in that "certain way." Only give from a place of joy and peace. Never give from a place of guilt, sadness or anger.
This refers not only to what you call "charitable causes." This also applies any time you are spending money. Any purchase you make should be considered contributing to a great cause. You are contributing to someone's dream of owning a business. You are contributing to someone's dream of being employed by that business. You are contributing to keeping dreams alive.
Anytime you spend money, do not grumble about the prices. Instead, be joyous that you are able to foster someone's dreams.
And remember, what you give will come back to you multiplied. If you give grudgingly, then you will receive back troublesome customers in your own business or personal affairs.
Another thing to consider is paying taxes. Every time you receive a paycheck, be joyful that your taxes are going to help so many others. After all, this money helps many during times of need -- disaster victims, farmers, students, businesses and many others in need. Pay your taxes joyfully.
And always remember, charity begins at home. Attend to your chores joyfully - running errands, cooking, cleaning, helping with homework, paying bills...
Giving joyfully in all aspects of your life will bless you beyond measure.
(See link below for "The Science of Getting Rich," by Wallace Wattles)