change required!

i have always been an introvert ... never use to express my feelings and emotions..

i had been always helping out my family and frnds, supporting them emtionally in their bad times..

but when it comes to me .. i mean .. when i m emtionally down and need a support, i m really unable to express myself..

often my frnds says k unless u dont tell ur problem, how do u expect people to understand u... and keeping everything inside would be really bad for you...

but thats the way i m .. and i aften suffer because of this nature of mine..

it seems like as if i dont trust people ... or do i have some kind of insecurity... i duno wht is it ... but this thing is really troubling me these days...

there are some people in everyone's life who are very important to them ... and u need to tell them how much they mean to to ... but i m so shy, introvert and sensitive that never say wht i feel ...

wht do i do??