First I would like to say that I understand how you feel, having found myself in low places of the same sort after several clean months. In short, it's a very negative place to be.
Yes, it hurts when a person falls and hits rock bottom. However, when a person finds himself in a dark pit, he can either choose to climb back out into the light or continue digging himself deeper. We are all here because we have experienced falling and - at some point - digging ourselves deeper into that pit. But most importantly, we are all here because we are striving to climb out. Sometimes it can be frightening when we look at the darkness around us, or look back and think of how we could fall down again. Sometimes it can be discouraging when we see how much farther we still have to go. However, if we look up at the light which is always up ahead of us, we are no longer focused on the darkness behind us. The closer we get to the top the more illuminated our surroundings are, and the climb up doesn't seem so daunting anymore. And - if we do dare to look down - we see the path behind us more clearly and realize just how far we've come.
Along the same line, it's so important to focus on the positivity, not the lack; on the light, not the darkness.
This reminds me of an idea I discussed in a post yesterday.
(guardyoureyes.com/forum/19-Introduce-Yourself/390513-Hello-Everyone)
When a person hits rock bottom, they experience a wake up call which - if heeded - serves to steer them back to the right path in life. Everything an individual goes through is ultimately for the best.
In Pirkei Avot, there is a pasuk:
"מִּצְוָה גּוֹרֶרֶת מִצְוָה, וַעֲבֵרָה גוֹרֶרֶת עֲבֵרָה"
Energy of the same kind attracts energy of the same kind. If a person focuses on the positive, then they will attract more positivity. Conversely, if a person focuses on the negative they will attract more of the same. Just like there is a downward spiral, there is an upward spiral as well. It all starts in the mind.
This also relates to the idea "סוף מעשה במחשבה תחילה". What a person thinks eventually manifests itself, if they focus on the thought and allow it to develop. A person's outer world is an expression of one's inner world. If a person changes their mindset for the better, they change their life for the better.