The easiest step in avoiding being the cause of unnecessary suffering is to stop killing others to satisfy your palate. You certainly don't need to eat meat and there are theories that eating meat may be almost as harmful to you as it was to the poor animal you bite into.

But don't stop there! You could take it a step further and avoid consuming any products that are effectively stolen from other animals. A vegan lifestyle is one that avoids meat, dairy, honey, leather, beeswax, etc. You don't even have to stop there! You can become a fruitarian and avoid plant foods that involve killing the plant. Of course, living a fruitarian lifestyle makes living a vegan lifestyle seem like a piece of cake!