Theory is absolute knowledge and practice is relative knowledge. The relativity of the theory with respect to the "here and now" makes it dependent on speed, time and place.
The solution to any problem begins with the study of theory. The problem and everything that concerns it need to know. You need to consult with books, the Internet and smart people. Knowing a problem kills the fear of it.
Theory without experience and personal practice application of this lies and fantasy. Theorists, visionaries. However, practice without theory is weak. Theory develops practice, makes it stronger, brings novelty and growth to it.
You cannot know truth from books, because books are illusion and truth is reality. Experience is the source of truth. However, it is desirable to know what to look for. Books are theory and experience is practice.
Theoretical, devoid of practice and personal experience, knowledge of reality, generates fear, laziness and weakness. As the mind becomes immersed in theory, it loses its immunity to reality and becomes sensually tender.
Experience turns theory into reality. The more perfect the DNA of the grain of truth of the theory, the more significant and productive its growth will be in real practice.
Truth is a theory that grows well and productively in practice, and falsehood is an imperfect and defective grain, chaff that grows poorly and unproductively. Truth grains are scalable, fruitful, and useful. The tares of lies do not grow, are unfruitful and useless.
The meaning of life experience is to turn theory into practice, to get rid of fear and gain confidence in yourself, that is, faith. In the absence of a theory of experience creates fear.