If you’re a parent, you’ll know how hard it can be when travelling with children, especially if they’re young.

It can be especially tough on a plane, when you’re trapped in the sky, fearing that other passengers are judging you.

So any effort to show a little kindness and support can go a long way.

This is especially tough for people who have been going through a hard time – and a reminder to us all, that we never know what strangers are experiencing.

Lindsay Mains went viral on social media after sharing the sweet note a stranger handed the mum and her husband Nick during the flight.

On TikTok, she explained that the couple’s two-year-old daughter Luna died in July, after being diagnosed with blood cancer.

Naturally, this devastating loss is something that Lindsay, her husband Nick and daughter Olive are still coming to terms with.

They recently decided to take a flight to see family – and ended up having a very emotional journey, thanks to fellow passenger Richard.

During the flight, he handed Lindsay and Nick a card, on which he had written: “My name is Richard. I have four kids and I can tell you guys are great parents. Patient and kind, the world needs that.

“Just wanted to say that. God Bless, RJ.”

Lindsay explained: “Sometimes you need to be reminded of the goodness in the world. After losing our youngest in July we finally took a cross country flight to see our family.

“We got on the plane full of heaviness knowing we were going to our home away from home but we weren’t able to bring our youngest daughter with us.

“We knew tantrums were inevitable but have been trying to support our oldest in learning tools to handle her big feelings and grief.

“This means tantrums can last for some time while she works through all of those big feelings.

“We looked at each other and decided our relationship with her was more important on this day than our relationship with the strangers on the plane.

“But as I prepared for angry looks or comments Richard reached across the aisle and handed us this handwritten note that made me cry and totally turned our whole day around.

“Be a Richard in a world of Karens… reach across the aisle and remember that you never know what people are going through.”

The video left people in tears, and many shared similar stories of kindness they encountered unexpectedly.

One mum wrote: “My son was having a tantrum mid-flight and the lady next to us let him use her iPad to calm him.”

Another wrote: “It’s simple, be kind. You don’t know what other people are going through. Thank you Richard for showing this family grace and love.”