What does Buddhism say about success?
True. Individualism, self-achievement &amp; success are strong features of Buddhism. The Maha-mangala Sutta &amp; Sigalovada Sutta are excellent examples. 

What mitigates blind &amp; excessive material pursuit in Buddhism is the emphasis upon duty ('dhamma') towards the well-being of one-self &amp; others and thus not pursuing what is excessive, harmful &amp;/or unnecessary.

The scriptures always praise materially successful people who earn their wealth blamelessly (eg. Anana Sutta) and share their wealth with others, without being attached to it (eg. 41.1.12.).

My impression is Thai Buddhists have been particularly shrewd &amp; successful as a nation, at least historically (rather than currently). The following link, whilst listing teachings from the ancient Pali scriptures, has a particularly Thai bent in its explanations. The focus on 'success' is very apparent.  

A Constitution for Living: Buddhist Principles for a Fruitful and Harmonious Life