I highly suspect i have adhd which i have masked by "self pre scribing/ taking of" street amphetamines all my life. symptoms were there at school.....

Excellent now: See your doctor about getting a referral to be fully evaluated by a psychiatrist. Your addiction will have to be addressed as part of a dual diagnosis e.g. psychological + drug addiction /dependence. The good psychiatrist will ask to talk to family for corroborative information regarding your early development e.g. grade school troubles with academics and daily issues at home. Take care.