[pilowsky]

After West opened 1♥, I took the advice from the forum to heart and decided to upgrade my hand to 1NT. Why not? It only had 8 losers, and the queens and jacks were very appealing as a source of tricks.
My partner bid 2♣ with 11 HCP and 4♠.
At this point, I felt a bit squeamish and tried to cop out at 2NT by bidding 2♦.
Too late; North was overwhelmed with confidence and went straight to 3NT.
West led the ♥J - clearly a singleton, so I marked West for the ♠A and East for everything else.
Things got off to a reasonable start.
Then, I managed to snatch defeat from the jaws of victory:
Here's the North and South hand - ♥J led by West.
Contrive to intrigue 9 tricks from this lot.

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Here's how I cleverly captured 8 tricks.
Stumbling at the final hurdle.

Spoiler

In case you were wondering, letting East suffer in 2♣ is what happened to everyone else.

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[shyams]

pilowsky, on 2021-February-26, 17:08, said:

After West opened 1♥, I took the advice from the forum to heart and decided to upgrade my hand to 1NT.

Who from the forum advised such an overcall? When?

[manudude03]

Upgrading hands doesn't mean showing a 15 count with a bad 12.

[pilowsky]

shyams, on 2021-February-26, 17:41, said:

Who from the forum advised such an overcall? When?

Will you issue a Warrant if I tell?

[AL78]

Yuo almost made it. Instead of playing the ♥9, play a diamond to the ace followed by ace and another club. East has only two hearts left and is endplayed into giving you two heart tricks. Doesn't deserve to make after that overcall.

[Cyberyeti]

AL78, on 2021-March-07, 05:12, said:

Yuo almost made it. Instead of playing the ♥9, play a diamond to the ace followed by ace and another club. East has only two hearts left and is endplayed into giving you two heart tricks. Doesn't deserve to make after that overcall.

And the butchering of the spade suit without which it's trivial.

Yes the hand has improved slightly with your heart honours well placed but that doesn't compensate for the QJ tight and lack of aces.