A glass of water doesn't weigh much... if you hold it for just a moment nothing will happen, if you hold it for an hour, it will hurt, if you hold it for a day, It will be impossible to maintain your strength... The same thing happens with problems, resentment and negativity, if you think about it for a moment, nothing happens, but if you fill your life with the problem it will be almost impossible to continue. Because it's not about the weight of the glass, but about how long we are willing to hold it. When something overwhelms you and you feel like you can't take it anymore, put down the glass.
Inspired by an anonymous metaphor.