"But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully. Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver. And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work..."
2 Corinthians 9:6-8
Not usually a grudging giver, but often lean toward doing things "of necessity" instead of doing them cheerfully. I'm generally pretty cheerful when I sign up, but then get bogged down in the execution, ignoring that last part about abounding in good works through grace (not through worry!).