should i write this?

should i write this?? or i should just keep it in my mind. i will make it short....
regret shall always come if u miss the chance.
people do make mistake, but should learn from it, if not, u will facing the same thing mistake again.
should always be alert and sharp when people giving information and listen well as there might be knowledge inside.
always keep your head high even though people are looking down on you and laugh. stick to your way of life if its a right choice. never let anyone influence you.
determination is key to the goal of life. always consistent with what you do and be sure of what you are doing.