Hi Newstart,
First thing: always think positively. That doesn't mean go and bury your head in the sand with your legs sticking out and deny the truth or reality. However, going 45 days clean is a big achievement and it isn't easy so you give yourself a pat on the back for that.
2nd thing - Don't get depressed, beat yourself up and fall into the vicious circle of apathy, inaction and further falls. Instead, use this fall to your advantage. I see you're already tightening your fences, but you need to HONESTLY assess what led to this fall and avoid repeating the same mistake in the future. Half the time, we're just in denial that something is a problem bc we don't want to let it go.
Finally, this is my 6th year of freedom from the addiction, but I still need to be careful, struggle and still occasionally fall. It's a lifelong process, but you've taken the most important step, which is the first one. DON'T give up now, you are on the road to a better life.
We are always here for you.
BW,
DL