What is Strategy & Strategic Thinking?

Here are two definitions I work with:

Strategy is a process by which an organisation (or system, or part of an organisation) continues to shape and realise its destiny; in the context of its changing environment; with the aim to enable all of its stakeholders to achieve success

Strategic thinking consists of all the ways in which we can consider the ideas and influences on our strategy and construct robust plans to achieve it

What are your definitions?