Make decisions faster, be less overwhelmed. I think people who are constantly overwhelmed are in that position sometimes because they leave small decisions undecided / unacted on.
For me:
I assess risk fast, is this a decision I can easily pull back from?
If yes = close the loop ASAP, make the decision, document your hypothesis, pull the baseline data, set a reminder to check in and see if you were right or wrong. Run your next test.
If no = spend more time or delegate to people better at making the call.
Too many people "file away" what they could answer today.
Read this, go close some loops.