Visualization - same goal every time?

[torgeir]

In Leo's video on meditation: exactly 14 minutes in, he talks about how visualization is basicly useless unless you do it every day.

Now when you are visualizing you are visualizing towards a specific goal, so this got me asking the question: Do you need to visualize on the same exact goal every day for it to have an effect? And if you have multiple goals you want to visualize; can you switch, doing one goal this day and another the next, or do you have to go through multiple visualizations after each other (in the same day) to get the effect?  https://youtu.be/q89nSsjWjFs