Respuesta :
the only way to be mature is if u just be more responsible and do chores, work out, worry about ur high-gene meaning shower everyday dress appropriately, do things that makes you look more older and more responsible
im 12 and super immature and goofy its normal unless you dont like being immature be yourself. i know someone who is 14 and hes super mature like he behaves like an adult i suggest you dont act super hyper in exiting situations and stand up straight it makes you look more mature.