What are doing wrong?..... Answer...nothing, What isn't helping? Soon as I seen you wrote I'm avoiding negative things, that put a red flag up, the more you avoid negative thinking the more negative vibration comes to you, and I've learned that the hard way, just as you are just now, I finally gave in and said ok so bad situation is here what's my lesson and where do I find the good from it and just accept it as it is.
I can only go by what has been working for me, I have also been listening to Abraham Hicks and the one conclusion I've came to is that it's our emotions that effect our vibration, so far things are manifesting for me quite quickly and the only thing I can think of that I've done is accept that I can't always be positive about everything, things go wrong, so it affects our vibration and the more we try to stay positive when we are not, just brings more of the things your trying to avoid.
So I've accepted I need to acknowledge if I'm unhappy with something or someone then understand the deeper meaning of why I'm feeling that way allow myself to have those feelings, then think of something that makes me happy if I find myself falling back into that negative space, lately the thing that puts me in good place is visualising elephants dressed up in cowboy boots and hats line dancing ( long story how that visualisation came about, but it works for me lol)
Best example of my manifesting lately is I've attracted a new man I'm dating who really adores me and we feel like old friends, I had finally decided that I was happy being single, and I actually am, but then bam there he's was just out of the blue.
And the second thing that has happened is me winning a small amount of money on a weekly bonus ball syndicate that my niece runs, it has been a rollover for the last 3 weeks, and I checked the numbers last night and I've won, this money will enable me to now pay for a spiritual retreat that my shamanic teacher has invited me to attend in February, I also won the bonus ball 4 weeks ago aswell, in-between all this manifesting I have had my dad nearly die, a washing machine completely pack up on me, stress at work, but I choose to accept these things happen and look for the silver lining then just think of something simple that makes me happy, for some it may be watching a sunset, taking a walk, reading a book, watching your favourite film etc. But for me those line dancing elephants always put me back in a good emotional vibration.
So this is what's been working for me so hopefully you can find some comfort in knowing although your going through some bad stuff the good stuff is still sitting there in your vibrational bank just waiting for the right time to manifest into the physical.