ok. my opinion about he will try to be more mature at 11 years old ... its imposible psychologically its really really hard < like you have a 0,3% for get that or you have unique form to reflect all in the world < or in your life ; in my case i got almost a bit of mature at 12 years old with 9 months with my BODY development ( the years in which your voice change , ,your altitude increase like a boss , and obviusly your perspective of all change , normally that period in the men is located alround the 12-13 years old , and finish in the 15-16 years old and in the 15-16 years old to 18 you probably or yes, you will become and young adult < mature or mature with some problems)
so this is a based study about the body change ... with 11 years its hard ( for not say Very imposible) to be mature about all in you perspective.
BAD GRAMMAR RULES.
and remember its my opinion about that 4-10 words he said < i forgot how much are the words he said.