Practice rational thinking, and often. You shouldn’t trust your mind to think healthfully on autopilot. You have to train it.
Brianna Wiest • 101 Essays That Will Change The Way You Think
Existentialism is when the rational mind hijacks the meaning creation center.
Aside from being able to think, one should also know what to think about. If thinking is the tool, knowledge is the resource. It's only by combining these that productive solutions can be formed.
Jacob Lund Fisker • Early Retirement Extreme: A philosophical and practical guide to financial independence
thinking deals with causes and effects and leads to logical, constructive planning; bad thinking frequently leads to tension and nervous breakdowns.