Are you one of those people who always knows what to say, no matter the situation?  If you are, consider yourself blessed.  But most people fall in the category of sometimes being at a loss for words.  Perhaps it's when you talk to someone who has just had a death in their family----what do you say?  I say:  the words you say don't matter as much as the fact that you speak from the heart.  Perhaps it's when you are so angry you can't even speak.  In this case, being at a loss for words may be a good thing----it could possibly keep you from saying something you may later regret.  Perhaps, though, it is when you are so grateful for all the blessings in your life, you simply don't know what to say. If you find yourself in a situation such as this, say it outloud!  "I am so grateful for all the blessings in my life" and don't forget to say it to the people who are some of those blessings! 

Have you ever noticed how many things we say that might not make sense to other people?
How about "Anyway....", "I mean....", "Let me tell you something..."?  We say these phrases and words without realizing, sometimes, we don't need them.  I mean..... See what I mean?  We say extra things we don't need.  I have a friend who uses the phrase "....in terms of...." fairly frequently. For example, she is telling me about the new pants she found:  "I wanted to get new jeans from Old Navy but I wasn't sure if I would like them....in terms of...." But what does that mean?  And is it necessary?  Maybe we should look at words and other filler-phrases like that as "ummm"s-----strive to eliminate them from our conversations.  They keep us from getting to the meat of the matter. 
Let's say what we mean and mean what we say-----I mean it!