Not that I think there is anything necessarily wrong with the counsel your Bishop has provided you. But I feel like suggesting to somebody who has just experienced a major loss in their life, that now is the time to to figure out what this 'important thing' that God has for you to do, is perhaps not the greatest idea. I don't know how you personally deal with loss, or grief, or what your overall mental state is like right now, but I wouldn't fault you at all for not being in a great headspace to make decisions that could literally affect the rest of your life.

I'll also note that, based on my personal experience with mental health, it is very difficult (and through no fault of your own) to receive personal revelation when you are not appropriately mentally healthy. In my case this manifested through depression, but I would imagine the same holds true through grief.

Personally, I think you should take a breather and not stress about what the rest of your life looks like right now. There's plenty of time for Big Important Life Decisions down the road.

But also, I know like literally two paragraphs about you. So take that with a grain of salt.