If I were you, I'd cut off as much of your damaged / thin ends as possible, so you're almost 'starting fresh'.

Then, if straight hair is really what you'd desire, I'd suggest you go and get a chemical straightening treatment done. It's a permanent thing (that obviously you'll need to get done again every 6 months - 1 year, as your roots come through) and would mean you don't have to straighten it every day.

Also, plenty of deep conditioning and coconut oil treatments will help moisture and 'patch' the damage on your hair.
3A with some 3B thrown in. Medium porosity.

Pre-poo: Organic Virgin Coconut Oil
Low-poo: SM Coconut & Hibiscus shampoo / ElastaQP Créme Conditioning shampoo
Conditioner:
Experimenting
D/C: Giovanni 2chic Avocado & Olive Oil Ultra Moist Deep Moisture Mask

Leave-in: My DNA
Styler: Ouidad Climate Control Heat & Humidity


UK curly. CG since October 2013.
Aiming for WL curls (eventually)