It’s basic etiquette to say mashaa’Allah tabaark’Allah if we see or hear of something amazing or impressive. When saying it say it loudly and don’t mumble it, as it makes a person wonder if one said it or is finding it difficult to say.
We should be happy for others and this shows our clean hearts and we should also teach our households this including our spouses and children from a young age.
This includes everything from someone’s house, something someone has achieved, getting married, finding a job, finishing their hifdh, having a ring on, a new shirt, their looking nice and so on.
Sufyan al-Thawri (ra) said, gratitude to Allah is avoiding what Allah forbade.
Some said that it is thanking Allah in good times and that patience with trials is Zuhd.
Some of them said that blessings continue as long as you thank Allah and they disappear when you are ungrateful.
Umar bin abdul Aziz said, remembering blessings is considered as being grateful for them.
Be grateful to the King with your tongue and your acts of worship and avoid what He has forbidden so that we may be grateful to Him.
Remember that if a blessing has been taken away, and you find you can’t do something you used to do easily, it’s because of your sins.
Remember, if a person has blessings, they don’t need to share these blessings with everyone! Otherwise they might be afflicted with evil eye. Choose which things to say and who you say them in front of. If it’s a teacher then it’s generally okay insha’Allah but in front of people you don’t know, a person should be careful how they word things. There is a weak narration on the topic which mentions to preserve upon your blessings by concealing them.