There is a saying "people with cold hands are good at making pastry", so keep the butter in fridge until you need it. Prepare a bowl, and add flour and butter. Mix them with your fingers, but do not knead the mixture.

When you get a crumbly, sand like texture, add water slowly until the texture becomes soft like your earlobe. Continue to mix, but do not knead.

Form into a ball of dough, and wrap it in plastic film. Chill for a minimum of 30 min in the fridge.