Here's a method that works for me:
Pre-align with great care, so as to get your bridge into a precise line that you perceive as the line for the pot. During this process, allow your eyes to take in the relevant data of CB, OB and line to pocket.
Once the bridge is set, stroke straight through the center line of the CB. Do not let the bridge move one iota and do not move your head. Observe the line the CB takes and the resultant OB direction. This builds your memory of angles. If the head moves, the memory is distorted and less useful.
Hit the shots hard. 2 reasons. 1. This reduces the influence of swooping. 2. This reduces the amount of throw (Softer shots throw more, so you have to aim them thinner).
Practice some of these without looking at the OB during the execution, this will help you to focus on good pre-alignment without the need to swoop or move the bridge to make the shot (which is what most players learn to do).
Do this as often as possible. Several hours per day will teach you how to see when you're properly pre-aligned after a few days, once you've developed good fundamentals... that part can takes months if you're a beginner.