New tips to be focus
Main problems
Lack of concentration
Dismissed knowledge
Knowledge disabilities
Solutions
Sleep at least 6 h a day
Breath deeply when you're under pressure
Remind of all your blessings
Do a hobby (depending on your preferences)
If you don't like doing some activity, just dismiss it
Identify your skills and abilities, as well as your strong weakness
Eat well
Take 10 min breaks
Necessary conditions
Enough time
Leisure
A hobby
Effective sleep time