Sloth-torpor-Restlessness-worry I meditate first think in the morning and every morning i have to face sloth and torpor.When i face sloth and torpor i make a mental note and i can see how is impermanent and  uncontrollable and after a while  it seams that i overcame it,so then when i go back to the raising and falling i can see it very clear from the beginning until the end and back again without interruptions.Then little by little thoughts and restlessness begin to disturb this clarity of mind,at this point the mind is very energetic and again i make a mental note and it passes away.Is like that there is not balance when the mind is concentrate i have to face Sloth-torpor and in the other hand and when is energetic restlessness come up.

Before i was forcing to stay with the raising and falling and i began to see how aversion was coming up and i was just dealing with it,little by little i learn to don't force to much.there is not aversion anymore but seams that there is not balance.Is this just normal or i am doing something wrong?

Sorry again for my english and i hope that what i write is understandable.
You should use the 5 faculties and 5 powers to balance you mind to dispel some the niwarana. 


When restless this is because your have become too energetic but lacking in concentration. Best is to do Anapana to increase concentration
When sleepy this is because you have high concentration but lack energy best is to practice Satipatthana, or instruction in the Capala Sutta
You have too much faith backed with little wisdom, you accept theory due to faith than at the experiential level, then you should develop your wisdom to see what you have faith in, at the experiential level. 
When you have lack of faith or doubt the teachings (you have learned too much with little experiential knowledge) you might either get lazy, so develop some confidence to practice by contemplating qualities of the Triple Gem enough to get you to practice and experience in reality the truth of what your have learned
When you have ill will try metta or realise you have will will
When you have desire realise it or contemplate on impermanence or realise have desire


To realise that the hindrances are arising you have to develop strong mindfulness.

Also as a final note with any hindrance or any other mental state there is and associated sensation. This arises and passes away. At 1st you will see it at a gross level as e.g. just sleepy but then you will sense they are made of smaller quantum of smaller sensations arising and passing away. Having said this the feelings and their arising and passing away due to metal factors or content is very difficult to sense. The Vipassana method based on the Pacalā Sutta:


  
    “Nothing is worth clinging to”
    
    When this was said, the venerable Mahā Moggallāna said this to the Blessed One:
    “In what way, bhante, in brief, is a monk freed through the destruction of craving, that is, one who has reached total perfection, the total security from bondage, the total holy life, the total consummation, the highest amongst gods and humans?”
    
    “Here, Moggallāna, the monk has learned that nothing is worth clinging to.
    And, Moggallāna, a monk has learned that nothing is worth clinging to, thus: he directly knows all things [he directly knows the nature of the all].
    Having directly known the nature of all things, he fully understands all
    things.
    
    Having fully understood all things, he knows whatever feelings there are, whether pleasant, painful or neither painful nor pleasant.
    
    As regards to those feelings, [Section on Disillusionment and Revulsion (Nibbida) follows]
    
    he dwells contemplating impermanence in them;
    
    he dwells contemplating dispassion [fading away of lust] in them;
    
    he dwells contemplating ending (of suffering) in them;
    
    he dwells contemplating letting go (of defilements).
    
    When he dwells contemplating impermanence in them, contemplating dispassion in them, contemplating ending in them, contemplating letting go, he does not cling to anything in the world.
    Not clinging, he is not agitated; being not agitated, he himself surely attains nirvana.