I thought I should re-post the following to my blog.
These are some very good points, not just for the 20 and 30 years old, but would benefit people of every age who put their mind into these.
10 Life Lessons I Learned from Surviving My 20s
http://markmanson.net/surviving-my-20s
10 Life Lessons to Excel in Your 30s
http://markmanson.net/10-life-lessons-excel-30s