I'm struggling a lot with this right now. I can absolutely see the hand of God guiding my life in numerous ways, but I'm definitely unhappy with the place that I've been guided to.
It is really hard to deal with the idea that God's plan for you includes major disappointments that won't be fixed in this life, or that God is putting you through suffering that feels completely unnecessary or pointless. Or that God will block your efforts to improve your situation or is withholding good things from you that He freely gives to other people, because it's all part of God's plan for you.
The idea that God would cause a bad situation to come to you, and there is nothing that you could have done to avoid it because it's God's will, is hard to deal with. I'm right there now. I do take a little consolation in the idea that if God put this bad thing in my life, then I am not responsible for causing it. I am still responsible for working through it, but I can exonerate myself of the responsibility for causing it.
I completely get the trust issue. You can completely trust God, and your worst fears can still come true. You can give your life and your will over to God and still end up in the exactly the bad situation that you didn't want to end up in.
I don't have a good answer. What I am doing right now is trying to frame it as the idea that I have to go through this bad situation whether I want to or not, and that at some point, it will be over. I'm even past the point where I would ask what I can learn from it or what God is trying to teach me. I just know that at some point, the situation will be over, because no season lasts forever. That's the best I can do with it right now.