How to get back my old texture after straightening?

That happened to my hair when I moved to Florida but when I moved back to Iceland this is what I did.

Step 1: Put hair up in even pigtails 
Step 2: Straighten each pigtail slowly 
Step 3: Take the pigtails out
Step 4: Brush hair 
Step 5: Straighten each piece that is still a little wavy or curly. 

But make sure you put on heat protection! 
Good luck :) takes about 10-15 minutes

I have done re bonding twice and smoothening twice with timespan of every 1 yr. again i dint want to go for either smoothing or re bonding. Naturally my hair texture little curly but rough. Either i want my natural hair texture back or is there any other thing i can do to look my hair silk and soft. i have heavy hairfall also. right now my texture is half curl and half straight which doesnt look good at all. Please suggest me some advices?

Cut your hair which suits for curl hair..and maintain it forever