l make a mistake today.It's a really big amd bad mistake.Luckily,I solve it in a pain way that l lose  some money.Autually,it's not the first time l do wrong things.About half years ago,my mistake was worse and it hurted my grandmother,too.All of this was happened in train station.l though, if l have my own car,l won't make these mistakes.However,l know,these wrong things show the disadvantage of me.l'm careless,very careless. l need to overcome it .l do need!