Is visualisation needed for something quite specific?

[seirwyn]

The most effective technique I have used so far is the 'set it and forget it' method. I tried thinking about stuff a lot at first but this just made me doubt and put out loads of negative energy so I discovered by a bit of trial and error what works best for me.
However, so far Ive used it for quite unspecific things but there are a few specific things that I want which I have used exactly the same technique for but they seem to be less forthcoming. I was wondering whether you need to put in a bit more affirmative energy by visualising the thing you want and doing it daily.Generally I dont do daily visualisation and I still get what I ask for but sometimes they are approximations. Most of the time this is OK though)
I have heard that vision boards are very effective. Im wondering if you can just be very clear with your initial intention and the forget about it or if you need to keep feeding it because maybe specific things need more creative energy. Or is this just another scarcity mindset that they are harder to get than simple things?
I think that everyone finds techniques that suit them so there may not be one answer but any feedback is always useful