Confused while writing about TIME TRAVEL(plz help me) i am writing about time travel but i got confused with tense..how to write something which already happened in future but its cause also remain in the past which hinder the present"..eg. i went to past ,killed my father which forbid my existence in present and also question the existence of my son.."..plz guide me..thank you

DAY 1: My first entry and i am writing about youth crime and its solutions.. (PLEASE CORRECT MY WRITING) One of the paramount issues throughout the entire globe is the skyrocketing number of crimes committed by teenagers.In this modern era, youth are diverting themselves towards hedonistic view.Due to this,they engulf their life in addiction of drugs.Once they become druggist,they are more likely to commit crime.The preventive measures that should be taken in order to stop this ghastly act is strictly counselling them about the effect of drugs in their health,society and their whole life in general.Another step that can also be handy is strongly imposing security measures for banning the circulation of narcotic inside the cities.Beside this,insensitive and careless parenting is also a major cause for child to engage in violent act.In order to solve this problem,parents should allocate enough time from their busy schedule for proper parenting and educating their kids.Apart from that,they should try desperately to fulfill the needs of their children,understand their mentality and should encourage them to work hard in the pursuit of success and their dream. In conclusion,teenage crime is an evolving issue in our modern world.Its reasons may depend upon child psychology,parenting or other factors. But at the end of the day,this problem can only be eradicated by collective effort of family,society and at last but not least the campaigning and programmes of a goverment.