Grammar errors

She gave me some very good advise when she told me to buy that car.

I honestly can't remember how long I've been waiting but it must have been since at least 45 minutes.

Yes, that's important because if you find yourself in a difficult situation, you can speak yourself out of it.

Were you able to lend me some money if I promise you that you will get it back very soon?

She's been laying on that couch now for the last six hours and is fast asleep.

I am waiting the bus to arrive any minute providing the timetable is correct.

I would call him down to see you in normal circumstances but he's so tired he's to bed already.

I'm not totally certain for the facts but from what I have heard, it seems that there were several people injured.

Now remember when you're travelling on the underground train, don't stand too closely to the doors.

It's no good sitting around and daydreaming simply wishing things that you'll never have a chance of getting.