First: Let people know you need help. If you can't motivate yourself to see a counsellor, for Heaven's sake tell someone anyway - people are nice. People will help you, maybe phone a counsellor's office and give you a lift there. Human civilisation is all about helping others; we're hardwired to enjoy it, too. See how many people have answered to this thread? Asking someone for help will make their day.
Life is cool. You are the result of three billion years - three billion years - of evolution - your ancestors were single celled organisms. Can you imagine what it would feel like to be an amoeba? Can you imagine them imagining you? You're an awe-inspiring piece of engineering, of incomprehensible complexity, designed to live.
That's my cause for happiness. I am a living organism, my primary purpose is to eat, breathe, protect my kind, and make babies (none of those yet, though). Is that dreary? Heck no! Food is delicious (and if you don't know how to cook, make the time and learn; it'll give you something to do, and even if you don't succeed at first, try again; I'm a proficient cook and occasionally burn the potatoes). Helping people makes you feel good. Making babies... well, I can't speak from experience here, but anything that makes you feel good is probably part of the progression of life (and you do not need to procreate to be vital to the species; aiding others is perfectly acceptable from an instinctive point of view). I may die one day, but I'm going to plan for that after I turn 200, assuming technology hasn't solved that little setback. Death may be natural, it may lead to Heaven, but that doesn't mean I don't want to bring as much of Heaven to Earth as I can before I pass on.
Sometimes the world may suck. It's not perfect, but the only people who can change it are the people living there. Buy a plant and water it every day (and if it dies, that's life; buy another), visit a forest park, get in connection with nature. Smile - it's infectious, you might start something. Look up at the sky and imagine how far it is to the nearest star (more than you can comprehend, but you can write it down - isn't that amazing?), and then wonder if your children will one day look back down at you.
Do you think with your head or your heart? Bzzt, wrong - the heart was once conjectured to be the centre of human consciousness. Feelings are part of the brain, they're perfectly natural, and you should share them. I do - I live on impulse, scavenging for food (in the fridge) when I'm hungry, sleeping when I want to, not caring about things I don't have to care about. I own a dog, and her simple outlook has certainly influenced mine, I confess, but the primary difference between a person and a dog is that people aren't as good at communicating their feelings. And the pants, I guess; dogs don't like pants, I've tested this.
I think sometimes people forget the amazing fact that they're Life first, humans second. Thinking about how bad things are is a unique ability amongst humans.
*Brief pause while I chase my dog around the house just because she enjoys it*
Yeah. Everything in life is special. We are the children of dead stars. Isn't that cool? Everything you see is complex, part of a 13 billion year saga, and you're right in the middle of it.
One day I decided to be happy, and never looked back. Some people may not have that luxury, and I'll admit it's sometimes difficult; it was hard watching my mother die at age 16, scary seeing my father hospitalised with heart attacks two weeks apart last year. But even if every day is a battle, decide you will win it, take pleasure in your victories, accept your defeats. If you have tried your best, you can have no regrets. Starchild, vital part of the now, foundation of the future.
Whew, that was longer than I expected. Now excuse me while I chase my dog again; play is genetically hardwired into life. This forum's just an outgrowth of a billion-year-old gene...
(And do consider religion; it's something humans are designed for, for some reason. We are psychologically stronger when we have beliefs, and those beliefs almost always boil down to 'be nice to everyone'. Perhaps shop around to find a good one; I'm Catholic, and as you might have guessed I'm certainly not brainwashed. Try it, you should like it.)