Take some deep breaths. If you have a big moment coming up, it's highly likely that you will be feeling nervous and anxious as it draws closer. You may not able to completely get rid of this feeling, but you can take steps to control your nervousness. Deep breathing slows your heart rate and reduces your blood pressure.Sit up straight and breathe deeply in through your nose.t is perfectly normal to feel anxious or nervous, but for some people it is very difficult to control their anxieties. There are diagnosable anxiety disorders which may require medication and therapy or counselling, but there are more moderate steps and actions you can take to help relieve your nervousness.