Don't feel disheartened.
Are you practicing mindfulness?
Also read some self-help books and books on habit formation and breaking like Charles Duhigg's " the Power of Habit". Or Napoleon Hill's "Think and Grow Rich". Excellent books that changed my perspective for the good.
Also listen to personal transformation videos on Youtube. You can watch Robin Sharma, Dandapani and many more. Dandapani really gives good concentration tips. These can help a lot in the reboot process.
Another thing I would suggest is: If your professional work is not computer-related, avoid turning on your computer in the morning, and avoid seeing your mobile phone in the morning (no matter what notifications or calls have come). Till at least 9 am or till you reach your office. What work are you doing now exactly? Are you still working at that insurance company?
I have gone through all your pages. I have made one observation. It appears to me that you have not really replaced the porn habit with something meaningful in your life.
Simon Sinek said it very well in a Youtube video. If you tell a pilot to avoid the trees, he will end up crashing the plane into a tree.
If a skier while going on the snow is told to avoid trees, he will hit a tree sooner or later.
Conclusion: If giving up porn is what you think of everyday, the mind is still focusing on porn. You don't want to focus on porn.
You want to focus on something else, so that everyday when you wake up, you want to do that activity or job and watching porn is no longer on your mind. You dismiss porn, not because you want to get rid of it, but because you have something good to do in life!
In your case, I suggest:
You are working as a salesperson in that company. Tell yourself everyday: " I will become the best salesperson in this company".
You will pray to God everyday in the following way: " Dear God, help me in my journey to become the best salesman of this company".
You will not say " God make me the best salesman of this company".
YOU will make the effort. God helps those who help themselves.
Second step: meet a successful person in the insurance business in your area. Don't ask him how he became successful.
You will ask him: " Can you guide me on how to become the best salesperson in my company?"
Then whatever tips he gives you, start implementing those in your daily work.
Try this for a few days and I believe your life will start turning around.