Never use soap to cleanse the anal area. Use only warm water, preferably while standing in a shower. If you are serious about getting rid of your hemorrhoids, forget about bathing in a tub. If you don't have a shower, get one. OR a bidet, a sort of upside down shower.
Never use toilet paper. Use a warm wet washcloth instead. If even a warm wet washcloth is too painful, hop in the shower and gently cleanse the area with warm water from the shower. (Hint: Take your clothes off first.) A bidet works in this situation also.
Eat a bowl of hot oatmeal, shredded wheat or other high-fiber cereal every day. Include lots of fruits and vegetables in your diet. An apple per day (yes, 365 apples/year) does wonders.
This rule - it's a bathing technique, actually - plus the rules above, will help you acheive a hemorrhoid-free state or will kill a flare-up in its tracks. Flare-ups will occur occasionally, from sitting for a long time or swinging an axe or sledge hammer all day, or, more commonly, from forgetting the above rules!
The Technique: Stand in the shower with your rear facing the shower head. Direct the shower flow with your hands directly to the anal area. Run the water as hot as you can stand for as long as you can - try for 1 minute. Repeat for each shower you take until relief is obtained. It's delightfully refreshing and you'll be amazed at the result.
OK, Here's Another
It's a lifestyle change: Get off your rear. Sitting aggravates hemorrhoids, so it makes sense to stay on your feet as much as possible throughout your day. Exercise helps to "keep things moving"