Mental Health

I'm going to marry soon, bt still I'm very confused about it. When I think abt it I find myself very irritated. Bt now I hv to do this... how should I prepare myself for marriage

My sister has been very moddy and detached to our family and her friends. Not as social as before, gets worried about the smallest thing, feels demotivated, has been suffering academically even though she is doing well in her tutoring classes. I want her to approach a doctor for her mental health or atleast talk to a psychologist but she is very worried. She is 20. Anything that would help her and feel less anxious in visiting a doctor?

I couldnt concentrate on a particular thing, i procrastinate things.. i feel hypersensitive to criticism .. im preparing for competitive exams .. failed many times .. lost all hope in life .. i instantly cheer me up by reading motivational stories .. but i end feeling low more and more the next day .. sometimes i stare at the ceiling or go to the top of my building with the intention to end my life ... but i couldnt do coz of my parents love and care and leaving them alone scares me more,,

I donr care about myself or feelings, I dont listen to anyone even when I know they're right. I constantly over think, and I feel like everyone hates me, and I'm constantly getting judged. My moods are constantly changing, and ive been distancing myself for everyone

I am feeling stressed and not able to concentrate for my fast approaching exams though I have studied every thing. I am not able to follow me routine and am tensed

I dont feel happy anymore .....feeling of sad is increasing day by dayeverybody laugh at me

I have not such confidence such other boys have i cant talk normaly some time forget what i want to say

Every time I laugh hysterically it turns into crying badly and then I start feeling sad, last night I was watching one comedy serial, there was this scene at which I was laughing and suddenly I started crying, this has happened a lot many times with me. Is this normal or I need some medical attention?

No sense of belonging , nothing interests me in life although I have everything I need. I just want to seize to exist.

I cant control my anger i try to damage my all the things even i wish that if it would be painless than i would have hurt me . I try to snatch my hairs I cry a lot a lot then i sit infront of the mirror then cry again. I have no control on my self i break my things only .