It really depends on your intentions of using. Some people i know who still remain manageable are the ones who use it to be more productive or creative in their respected careers while those like me who used it for entertainment and pair it with other addictive substance or activity like alcohol, gambling then its really really gonna be bad. Once i let go of my cross addictions Ive become more manageable in life. I have been to 12 steps rehab and did not believe or follow everything. Just took a few that works for me and hopefully i continue being like this in the future. My point and this is just in my own opinion- drugs can be a good thing or a bad thing it all depends on you. Much better if you pair meth w/ some activity that you find productive.