It's what I have first thing in the morning, often just before bed at night, and four or five times throughout each day. It's what I prepare to show someone they are welcome in my house, and what I use to break up a boring day. Tea. I'm cutting it out this Lent.

Why tea? There's nothing wrong with tea.  Tea, apart from the inevitable air miles to get it here, is a fairly minor vice. Especially as I always drink Fairtrade.

I'm cutting out tea because it's a habit, even an addiction, and habits are hard to break. I'm going to find it hard, really hard, to break my tea habit over Lent.

I'm hoping to raise at least £200 for CAFOD this Lent through cutting out tea. A pound for each cup I won't be drinking. What's more, this Lent for every pound you give, the UK government will match up to the value of £5 million.

Among many other things, money given to CAFOD can help fund some of the world's poorest communities adapt to the impacts of climate change and extreme weather.

I'm also hoping to encourage at least 40 people to add their names to CAFOD's online petition for action on climate change this Lent. A signature for each of my tea-less days in Lent: www.cafod.org.uk/oneclimate

Thank you! Check out @campaignsarah and http://blog.cafod.org.uk to see how I’m getting on.