If I gave already tzdakah and I think that I don’t want to give anymore. Then later I have a machshovah that I do want to give, do I need to give it because of machshovahs tzdakah, or the machsovah from before not to give overpowers this one? thanks
The thought of not giving doesn’t negate the thought of giving the tzedakah. However if the thought of giving was not a real desicion, rather a fleeting thought, then that would not be binding to obligate you to give.