It is best to seek God all the time. Not just when things get rough.
Read: Ecclesiastes 8:12
“But even though a person sins a hundred times and still lives a long time, I know that those who fear God will be better off.”
http://bibleresources.bible.com/passagesearchresults2.php?tp=12&book_id=25&c=8&passage1=Ecclesiastes+8%3A12&version1=51