If we see the question, you are asked to compare Experience and Book
. However, what I have after reading your writing is you don't answer the question.
In the university we study a lot of subjects, gain general information and in some separate lessons we get deep knowledge. For example imagine an electrical engineer study electrical circuit's lesson very thorough and becomes an erudite one but are these entire theoretic education make him qualified to find a suitable career?
They are very useful and eye opening for everyone to extract necessary information and save her/his time. For example in solving math questions having a handbook with solution of the questions is very helping but real knowledge will gain when you encounter with questions, try to solve them even you can not and find your strength and weakness.
What is the purpose of those sentences? Do you want to talk about experience or book? I don't think so. I say this because the ideas sticked into are too general. You should narrow your sentences and always focus on the topic.
And this sentence:
I mean by assimilating experiences and theoretical knowledge you can develop your long-lasting skills
This might be you want to say: Experience and book help people develop life skills.
Life is an arena in which every person live, study, learn and build his living.
too many verbs.
should be cannot
The answer is dependent upon experience which is obtained from working, encounter with problems, try to eliminate errors and modify the circuit.
this sentence is too long. Break it down into two sentences.
Although I agree with this expression; knowledge that is...
Although I agree with this expression (a comma)
knowledge that is...