We already have existing posts on this matter but I'll answer again.
Based on my experience, you can choose to retard or speed-up the outcomes but some people and some situations are destined to be a part of your life sooner or later, you can only change the way you approach the situation and alter slightly the timing that this happens because of your free will.
Free will only applies (for me at least) to minor stuff and minor life decisions that occur on a daily basis e.g wether you'll go to visit your grandma or not this week or wether you'll purchase that dress and pair of shoes over other options.
If psychics are unable to pick up your ultimate path or destiny, it simply means that they failed to connect and free will is only an excuse. They can tell you about every individual tree in your "forest" but if they can't tell you where is this located and the general/utimate picture, they are gifts are merely useless.
Also, much has been said about LOA and unfortunately, after years of experience exercising... its concepts are faulty let me explain why.
We all know some cases of negative and plain evil people in our close environments e.g family, work, community who seem to enjoy better luck than others without doing much or achieve great things by thinking merely with logic. And someone that is good-spirited and tries their best, may never reach that level of success and personal completion.
Also, regarding relationships, it has been found in a psychology study (will quote it once I find the link as I don't remember it) having realistic expectations in our relationships with others is much more effective in making that relationship last instead of being overly positive or negative. I have found this personally to be true again and again.
I had exes dump me out of nowhere when the relationship was going great and I was totally positive and optimistic and on the contrary, in those relationships where I had my head in the ground and was even slightly negative, the other person would make a greater effort to improve the relationship and keep me in their lives. If both people are overly positive and wear rose-colored glasses, they will be in for a rude awakening sooner or later and wonder what you were thinking.
LOA only helps in keeping you confident and motivated to achieve your visions, it can't magically manipulate the universe and outcomes to your favor. But hey if you feel it helps you attract more positive outcomes, of course, you can still continue practicing its principles. I don't feel it's entirely useless but it's not as "magical" as people claim.