Meditation helps in many ways, but some techniqes are more specialised in 1 aspect than the other. For example Void Meditation helps with increasing your overall awareness, amongst other things like relaxing and clearing your mind. Focal Meditation especially helps with getting more focused and such. Since I meditate I'm more calm, can fall asleep way faster (before it was like 30 minutes now almost within 1), also I'm more focused and aware. There are alot more things in which meditation can help. You can ask the member ShockWave as he was the leader of the meditation course on the DVA in which I participated or you can just google it
I hope this cleared up some things for you.