University students often suffer unnecessarily during their studies — mainly due to traditional impositions, which have little to do with intellectual and professional growth. Encouraging judicious critical thinking may help alleviate this. Training students in rational critical thinking before they begin the prescribed curriculum brings astonishing results, leading to quick, rational and enjoyable studies. Students quickly grasp that knowledge evolves and textbooks may be questioned; they develop independent critical thinking that results in very good final results. The challenge, therefore, is to convince teachers to apply critical rationalism.