Many speakers feel the need to preface statements with the words “I think, ” as in “I think we should work harder” or “I think the American people deserve more health insurance options.” Perhaps speakers do this because they worry that they’ll be perceived as arrogant or overbearing if they don’t. But their worry is misplaced.
“I think” only weakens a statement. The message is stronger and the speaker sounds like more of a leader if there’s no qualifier at the start of the sentence. So when giving a media interview or conducting a meeting or delivering a presentation, just say “We should work harder” or “The American people deserve more health insurance options.” Simple as that.