What is that "ONE THING" that you cannot live without?

Same hir, i can't live without my cellphone... and my watch, and any book which i read in my kids' school while waiting for them, my hanky too(they come handy all the time).

ya i also have one like that which i cannot live without that .. that is my kerchief.. where ever i go i use to have mu hand kerchief with me ,, if i lose it a day also i feel very bad and sit alone with mood out.. My hand kerchief was used to me in many purposes.. so with out that my life will be difficult.

It is a good question and I remember reading somewhere in some book that you should never pack things that you cannot live without in the suitcase that you check in and it may have the possibility of getting lost in transit... Well, it all depends on the situation when it comes to what I cannot live about, for example, if it was survival I would have to say water, if it was in the morning before leaving my house, I'd say coffee, if it was out of my electronic gadgets, I would have to say my mobile phone and if it was about my belongings I would have to say that nothing is indespensabile when it comes to an emergency!