Can't make/remember/trust decisions! What do you do in these situations?

I am really struggling with making, trusting, and remembering decisions.

Making I have the hardest time even defining what I am making a decision about (should I get a new SUV, a new car, or a new job (because of my long commute) or move or…). Even when I do, I see two different options, and all their details, and i think “well, golly, they sure are different!” and just sit there… Neither one is better or worse.

Remembering Often, when I finally do break through the impasse and make a decsion, I TOTALLY FORGOT I MADE THE DECISION! At work, I will see a problem on a project, and make a decision on how to solve it, and then open up the folder and find out I ALREADY MADE THAT SAME DECISION WEEKS AGO! I feel like half of my life, and my files, are writing to work out what a problem is, then writing notes to myself to remember what I decided. Its like that movie MEMENTO..

TRUSTING Let say, despite the odds, I make a decision and actually remember it. Now I totally don’t trust it! I’m always second guessing “is that really what I should/want to do?” I feel like I was being impulsive when I made the decision, and need to actually think the issue through. And, its not unfounded anxiety – about 50% of the time, the decision totally forgot to take into account some critical piece of information. The other 50% it turned out to be a sound decision, but i have no “signal” about which it is at the time. I have to revisit the whole decision making process.

What I’ve done At work people tell me to “just trust myself” but when I do, then people ask “why the hell are you doing that?” and I dont really have an answer (don’t remember, or don’t trust the answer).

I’m trying “mindfulness” and acceptance – that helps a tiny bit. I’ve also tried “delegating” / involving others in the decision making process – I dont know if that’s helping or not.

TL/DR: What have others done to make, remember, and trust their decisions?