Do you question your own code shortly after you wrote it?

Do you question your code shortly after you wrote it? I find myself questioning everything I have written weeks, even days after I have written it! I often contemplate rewriting everything. I wonder if this is normal behaviour or if I am just too worried about my code being shit instead of continuing on with projects before I just get worried and start everything over?

>>37
http://www.forbes.com/sites/tomiogeron/2013/08/08/with-6m-in-new-funding-max-levchins-glow-app-helps-women-get-pregnant/

Glow uses machine learning to anonymously analyze 9 to 15 data points per day from users with the aim of providing more accurate recommendations for everyone using the app

love how "machine learning" became the next marketing buzzword.