Confussion, concentration and memory pro

I have anxity, dizziness and fobia type problem scence my childhood. Some time panic also, i went a neurologist and told my problem he gave me betacap tr 40 and amixide h, and some blood test and mri of brian, the blood test ware ok but in the mri of brain there ware some very small dot, so doctor prescribe me clopitab75 for three month, at this stage i was totally depressed and in tension i thought some thing is wrong on my brian and always i thought on that my anxity level was too high, so that my doctor hold amixide h and gave me Zaptra 12.5, after a month i feel good, and three month latter he stop clopitab75, and he said continue betacap and zaptra, Now the problem is i forgate so many things, i confused some time, lack of concentration, memory problem for last one year, How to get rid off this problem?? Can i be proper like before when doctor withdraw those drugs. Amixide h-2month stop. Clopitab75-3month stop. Betacap40- 18month cont. Zaptra12.5-16month cont. plz help doctors