In one of my earliest posts, I advised all at the time of receiving Holy Communion to ask for all the graces you need to make you whole and holy. This is the time to be greedy and ask for the works (or the whole enchilada?). God will be most pleased, I assure you.
Now, when should you be reckless? No, not when you are driving a fast car. I talked about Letting Go a week back, which is abandoning yourself to God. This is the time! Reckless abandonment in God will make him happy and you carefree.