How do be less scared?

everytime like my mom comes in my room I jump >.< or somtimes when I see someone come from the corner I jump >.< how can I be less scared?

Try to be more aware of your surroundings.

I could be many things. though I have no knowlegde in the med field, I would recomend you getting a physical. irregular blood pressure may play a factor. another thing is that you may have many thoughts running in your head and something sudden can trigger your mind to stop thinking and "scare" you.

I say this because I went through that too during my high school (school and relationships) events

If you're an honest person, you shouldn't be scared of anyone since you're not doing anything you're not suppose to be doing.