I have learned this the hard way, please people quitting then going back to it, and take note. Firstly you are amazing for being here, and then you want to change.
I need to emphasize that each time you kick the spice (even if for a short period), it will make it harder the next time around. Quit for good.
At the same time, we are all human, and relapses are possible! They are not the end; the most important part is that you get back on that wagon and continue rebuilding.
It is worth it! No matter how many times you have cycled, you can still get out! Self-talk is king. Do not let the spice talk overcome your natural will for want of better!
You are better and stronger than this!
I intended writing my story, but this shall do for now as I have noticed many others trying to quit than going back to the crap.
I have been a 5+ year user. I do not smoke synthetics anymore. Write it down. Put it on your wall. It will become true if you read it and want it every day.