Thanks to Derek Sivers, the last year I used more often the rule
“HELL YEAH!” or “no.”
If you need to answer an invitation or you need to decide for yourself to buy the new iPhone and you aren’t sure if should buy it. If you can’t answer with your
“HELL YEAH!”
then just say
“no”
It helped me a lot to save time. It doesn’t have to be exactly the answer “HELL YEAH!“. It could be
“WTF - This is awesome!”
“YEHAAA!”
or
“Wohaaa!”
Try your own “HELL YEAH!” for a month and see how easily it is to decide for things which really matter to you.