IMO, there are two ways to be at ‘peace’
- The short-term answer is “Distraction”
It includes everything and anything that we could do, to take our thoughts away from current issues and keep us occupied/enganged in something else.
It could be
-
Movies/series/anime/sit-coms
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Sports and games
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Music
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Time with nature (walks/rides/trips)
And there is no one size fits all answer to this.
- The long-term answer is “Mindset”
If we can develop a positive attitude towards challenges, it can keep us level headed and this will bring some calm/peace to us.
But, this is easier said than done, it mostly comes with experience. (especially with bad ones)
Friends, family and good books, can help mould our mindset.
And everytime I think about mindset, it always reminds me of this great poem
IF by Rudyard Kipling
If you can keep your head when all about you
Are losing theirs and blaming it on you,
If you can trust yourself when all men doubt you,
But make allowance for their doubting too;
If you can wait and not be tired by waiting,
Or being lied about, don’t deal in lies,
Or being hated, don’t give way to hating,
And yet don’t look too good, nor talk too wise:
If you can dream—and not make dreams your master;
If you can think—and not make thoughts your aim;
If you can meet with Triumph and Disaster
And treat those two impostors just the same;
If you can bear to hear the truth you’ve spoken
Twisted by knaves to make a trap for fools,
Or watch the things you gave your life to, broken,
And stoop and build ’em up with worn-out tools:
If you can make one heap of all your winnings
And risk it on one turn of pitch-and-toss,
And lose, and start again at your beginnings
And never breathe a word about your loss;
If you can force your heart and nerve and sinew
To serve your turn long after they are gone,
And so hold on when there is nothing in you
Except the Will which says to them: ‘Hold on!’
If you can talk with crowds and keep your virtue,
Or walk with Kings—nor lose the common touch,
If neither foes nor loving friends can hurt you,
If all men count with you, but none too much;
If you can fill the unforgiving minute
With sixty seconds’ worth of distance run,
Yours is the Earth and everything that’s in it,
And—which is more—you’ll be a Man, my son!
, no alerts 
, just some time to unwind 
Inner peace 
