How Not to be Hungry, Wet and Freezing
You find that you're starving because you've not brought enough food, or that the food you brought isn't enough to satisfy your hunger. You may have carried a can of delicious sardines up a mountain only to discover that you've left your can opener at home. You may have brought a piece of marinated meat, but you can't start a fire. Even worse, you may be suffering from a swollen ankle after a bad slip because you didn't have bandages.

We can never graduate from being fully prepared. When you're exposed to the elements in Nature's playground, you can only pray you're prepared for anything.

Below is a list of items that one should always bring along for a trekking trip. If you're travelling in a group, then you can share the load of the items.

EQUIPMENT I USE
A Swissknife
Victorinox Rucksack 
Water Bottle
Nalgene Lexan 1L
Water Filter
MSR MiniWorks
Camera
Olympus ƒÊ [mju:]-II
Flashlight
Cateye Halogen lamp
Flashlight (used as a spare)
MiniMaglite
The M-3 is a top rank compass with a large liquid filled capsule. The compass features a serrated bezel ring, which is easy to turn even in cold weather when wearing gloves. The M-3 has an adjustable declination correction scale.
Compass
Suunto M-3
Stove
Campingaz Bleuet 270 HP
Lighter
 Batteries
Duracell & Energizer
2-way Communication
Motorola FR50 & FR60
  Cooking Utensils
(mesh tin, fork, spoon, cup)
Tent/Flysheet  

Mat
Overland/

  Sleeping Bag
         

FASHION STATEMENT
Cotton vs Synthetic T-Shirts
Cotton Ts Synthetic Ts
go for the lightweight and thin ones. Cotton absorbs sweat easily; and acts as a cooler for the body heat. You might start trekking in wet cotton Ts on overnight treks as cotton doesn't dry quickly. Then again, you'll be sweating once you start trekking.

absorb less moisture; traps sweat and heat. Great for rainy days—wear one over the cotton-Ts to keep me warm. When putting them out to dry, they dry real fast.
Thin nylon shorts are ideal for treks—and especially good when crossing rivers.

Fashion won't earn anyone a Best Trekker Award. Clothing should be suitable for the heat and humidity of the jungle. Wear light coloured clothes—black and dark coloured clothes absorb heat easily.
Sarong
The Multi-Purpose piece of cloth. Apart from being worn, the sarong proves to be a good changing room, towel, blanket, pillow, stretcher, wrap, and probably many more uses that I've yet to discover.
Hats/Baclava
Wear a hat to keep your head warm when you're feeling cold. About 70% of body heat is lost from the head.
  Hiking Boots
Rivers Aviator Boots
Sandals
Don't get me started on the philosophy of waterproff shoes. Use sandals when crossing rivers and so rest
Windbreaker/Jacket 
Raincoat/Poncho

MEDICAL SUPPLIES
No one wants to get hurt, but it's important to be prepared if for situations where one has to provided first-aid. Whenever you go on a treking trip, it is sensible to carry a small medical kit of your own. Your kit should include some of these basic items:
Paracetamol or Panadol
general painkiller for headaches, pain or fever.
Yoko Yoko or Flanil
Analgesic Cream for relief of muscular aches.
Oral Rehydration Salt (ORS)
for treatment of severe diarrhoea.
Antacid
for gastric
pain and heartburn
Activated Carbon
for diarrhoea and stomach upset.
Primperan
Anti-vomit
A Triangular Bandage
multi-purpose: as a sling, or wrap.
Povidone Iodine and/or Salt
it stings but it's great for cleaning cuts and grazes.
Bandages, Cotton Buds , Gauze Pads,
and Band-Aids

for minor injuries.
Surgical Gloves
for cleanliness and for protection against blood from exposed wounds
.
Dhamotil or Lomotil
for diarrhoea
Insect Repellent
for repelling insects (what else?)
Pencil
for writing down important records and information about an injury.
Coins
in case there's a need to make emergency phone calls from a public phone


Packing Tips
Don Mah says "Pack Light!"
It is highly recommended that to keep your pack as light as possible, you should re-pack ALL your food in ZipLoc bags. Minimize all the garbage you will be carrying by getting rid of it right from the start. And buy food that generally only requires water to prepare. Avoid canned goods and glass jar products. Have at least 2 containers of 1.5L water bottles. And you should only carry what you feel comfortable carrying.

Use New Batteries
Make sure you put on new sets of batteries on all eletrical equipments before each trip. I've been on one trek when all my fellow trekkers' flashlights run out at the same time, and get immobalised in the dark. That was one of the stupidest thing to happen to me on a trek.

etc etc etc.
more to come...