It's good to challenge yourself! Just the right amount... It shouldn't be too hard, but not too easy either. If it's too easy you get bored, if it's too hard you give up. Balance is extremely important here.
I have therefore decided to challenge myself to write an article a day for 50 days! The articles will be about anything that comes to mind. The only requirement I have is that they should be about something that is relevant to me on the day I write and I must not miss a single day!
My hope is also that the challenge will help me resolve my current writer's block. We'll see how that goes!