Hurry,worry,excitement, despondency,anger,complaining and envy –
which deplete the mind and render it unfit for any achievement.
They are common forms of mental dissipation which a man of character
should study how to avoid and overcome.
The energy wasted in frequent fits of
bad temper would if controlled and properly directed, give a
man strength of mind, force of character, and much power to
achieve.
The angry man is a strong man
made weak by the dissipation of his mental energy. He needs self control
to manifest his strength.
The calm man is always
his superior in any department of life,and will always take precedence
of him, both in his success, and in the estimation of others.
No man can afford to disperse his energies in fostering bad
habits and bad tendency of mind
~James Allen from the book 8 pillars of prosperity