How do I turn separate marketing tactics into one campaign toward a goal?

You can execute a tactic. You can run the ad, send the email, make the post. What overwhelms you is tying them together into one campaign that moves toward a goal. That is a real jump, from doing a thing to orchestrating many things, and feeling overwhelmed by it is normal. It is a different altitude of the work. The thing that turns scattered tactics into a campaign is a single clear goal that every tactic serves. Right now the pieces probably feel separate because there is no spine connecting them. When you name one specific outcome you want, each tactic gets a job in service of it, and the overwhelming pile becomes an ordered plan. The goal is what makes the parts into a whole. Start at the end. Write down the one specific result this campaign is for, in a single sentence. Then, for each tactic, ask what job it does toward that result, and cut anything that does not have one. The campaign builds itself backward from a clear goal.