i had to look up the other threads - i see your cousin was very young.
all the stuff about the spiritual state of people after committing suicide does not apply to kids.
kids are not 100% free to make their own choices, they come under lots of pressure from the culture, friends, their wider community etc and the Bible tells us that the kids have angels who 'look on our father in heaven'.
i expect yr cousin is in a better place now, God does not judge kids as harshly as they judge themselves.
if u can't pray, at least read the Bible and fill yr head with good stuff. put away angry music (that applies equally to Wagner as it does to the type of heavy metal with lots of swearing and shrieking) and don't watch depressing movies.
talk to sensible, cheery people, watch nature programs, listen to decent Christian music (not too sugary sweet, i would personally recommend stuff from here: http://tasbeha.org/mp3/Songs/English.html
) or chilled out music (classical or 'happy' pop music) and also try to help out people around you.
sometimes focusing on others helps u to get used to all the difficult changes in your life.
may God give you peace and guide u towards a better state of mind.
we are praying for u.