Sometimes all you need is a small gesture to brighten your day.
On Thursday paramedic Chris Hughes got just that when he went to buy his lunch.
Mr Hughes, from Merthyr Tydfil , was working in Bargoed when he called into Tesco to buy a pot of pasta, some crisps and a bottle of pop - but when he arrived at the till someone had already covered his bill.
Mr Hughes, 39, said: "It all happened a bit quick to be honest. I was on my break for lunch so I went to Tesco.
"We were just about pay at the till but the cashier said someone had already paid for it. She said the payment for this has been added to her (a woman's) bill.
"She said 'That paramedic there - whatever he has I will pay for it. It's on me'."
Mr Hughes couldn't believe it when the cashier told him but said it was a 'really nice' gesture.
He said he wanted to wait to see who she was but couldn't find her. Instead he posted the picture of his lunch on Twitter to show how grateful he was.
He is working a weekend of late shifts - which means he works between midday and midnight.
Even though he's working a lot of hours this weekend he said the kind gesture really helped to lift his spirits.
"I only put it on Twitter because it's a bit of an emotional thing really," Mr Hughes added.
"It just shows there are people out there who are willing to support us.
"Other members of staff on social media have been saying they have seen some other acts of kindness before like bars of chocolate being left on the ambulance.
"It's nice to know we have their support."
