‘‘So long as Colin shut himself up in his room and thought only of his fears and weakness and his detestation of people who looked at him and reflected hourly on humps and early death, he was a hysterical, half crazy little hypochondriac who knew nothing of the sunshine and the spring, and also did not know that he could get well and stand upon his feet if he tried to do it. When beautiful thoughts began to push out the old hideous ones, life began to come back to him, his blood ran healthily through his veins and strength poured into him like a flood. His scientific experiment was quite practical and simple and there was nothing weird about it at all. Much more surprising things can happen to anyone who, when a disagreeable or discouraged thought comes into his mind, just has the sense to remember in time and push it out by putting in an agreeable, determinedly courageous one. Two things cannot be in one place.
Where you tend a rose, my lad,
A thistle cannot grow.’’
The Secret Garden – Frances Hodgson Burnett