Holy Spirit to us allows us to have God's attention and Him to speak and direct us as He would. Acts 16:5-10 Holy Spirit directed Paul and co where to preach and where not to preach.
Like in a TV cop show when they are chasing the bad guy: Holy Spirit is like a helicopter with an aerial view and we on the ground. We better have communication with Him so that He can give us instruction.
Also Holy Spirit is our strengthener. In life, we often find that our strength is finishing but the journey and the fight is not over. We need boost.
Helper: Holy Spirit is given as our help but we ask not for His help that He may give it.