Both approaches work for me. Sometimes, I know exactly what I want to focus on. Take a simplistic example. I want my palm trees to be awesome. To just be awesome. So thats the picture. Then the perfect requirements needed start appearing.
Another time, I might want to, say, find an investment, but am not sure where or what. I know how I want to feel, what the outcome will mean, in an infinite number of ways, limited only by my imagination. So I picture that, focus on that, and look forward to suprises. It might even happen outside of the initial thought of an investment.
I spend time also just focusing on oneness, on choosing and allowing, totally trusting and letting go to the perfection and equality and infinite potential of oneness. Realising that by recognising and choosing it, that by doing it, I actually am it, and am experiencing my truth. Seeing every moment, thought, creation, every feeling, every instant, cell, whatever, saturated in it, in choosing to allow my true nature.
Then I just (try to

) relax and let it happen.
But after a long learning and experiencing process, meditation on oneness, the true permanent underlying condition, always takes priority for me. I sort of sense its all that really matters. I think some people really know and sense that fully, without much or any effort...like people that are naturals at other things.