Read the Book of Job!
Seriously, you can do it in 42 days if you read a chapter per day (start a couple days early, Monday before Ash Wednesday).
Why?
Think about it. It’s one of the most penitential books in the bible. Plus, it will put all of your recent sufferings into perspective. Maybe you lost a business this past year? Why not reconcile that with Our Lord’s sufferings by meditating on His servant, Job, who probably felt just as badly as you (if not much worse)?