Gambling that which you can afford to loose at a time helps you get over losses quickly and the faster you get over losses the better for you and the easier it is for you to refrain from chasing losses thereby reducing your chances to addictive tendencies. And this is exactly the principle for which I follow.  I don't stake that which I cannot afford to loose at a time even as my biggest or highest stake.

If you are attempting  bigger stake because you want to increase your chances of winning big, make sure that you are not emotionally attached to that amount,  and it is such that you are willing to lose at anytime and still not have a reason to feel like you must recover it so always know that gambling is a game of luck.