flat/guilt

So I have spent almost 3 weeks flat hunting, seen some dodgy and dirty places all sides of london!
Found the best flat on Tuesday night, started moving in and paid some money - all was good til i got a txt at 1.30am last night from her telling me she not moving out and i needed to come and get my stuff!!
I got 2 hours sleep last night im starting to panic - as of sunday i am offically homeless ... hostel it is then!! FARK!
im so stressing about it now too, cos it was all sorted and then it all fell apart so quickly!
Why does this keep happening to me! what do i keep doing wrong??

Hadnt eaten anything all day - due to stress and sickness (damn flu) then when i realised i hadnt eaten i felt good ya know... like yeah im back!! haha
But then met up with a mate and she suggested dinner... why did i agree, i havent had dinner all week then tonight i have veal and veges!! im such a disgusting pig!
So now the guilt has set in!!
I have ruined all my day by eating dinner!! WHY????