Buy ground flaxseed rather than whole flaxseeds. Flaxseeds must be ground for your body to absorb the omega-3 fatty acids.
Sprinkle 1 tbsp. of ground flaxseeds over your cereal. Don't mix the seeds in to keep them from settling to the bottom of your bowl. If you notice whole flaxseeds in your cereal, you may want to buy a brand without flax already in it.
Repeat Step 2 every day, but do not increase the amount of flaxseed. Too much fiber can cause either diarrhea or constipation, as well as inhibit the absorption of nutrients in your body.