Good deeds

So, no more waiting, let's start now. Today, take a 5 mins time, whether it's in the morning or in the night, watch your breath. As time goes, we can probably increase it to 10 mins, 20 mins, 30 mins... This is actually doing a good deed, and we don't even need money, energy or anything, but just 5 -10 mins of our time. Why it's said as "a good deed"? What we call "good deed" is probably just like: 
1. saying good words to make people happy, not saying any words that could harm others - yes definitely those are good deeds which we do with mouth (speech).
2. Any action that we do to help others, not doing any action that could harm others - of course, those are another type of good deeds that we do with our body (action/deed).
But, there is one more that we probably forget, that's "thought". 
Thought may lead to speech that we say and action that we do. There is one quote which says:

True observation of the precepts in thought,
leads to their instant observation
in speech and deed too.

~ Stonepeace

Therefore, if we could train our mind, by watching our own breath just for 5-10 mins, we would have a strong base. When thought arises, we have the awareness of it; when we speak, we have the awareness of it; and when we do any action, we have the awareness of it. If our mind was trained that way, automatically, our awareness to things that should be done or shouldn't be done will be under controlled.