From what I gather it never goes away for most, its absolutely normal. I had a lot of trouble with this also, that is until I decided to make some Changa which is DMT infused leaf that you smoke. I use Damiana and you can get it at most head shops. Heres a link to the DMT handbook which is chalk full of information. For Changa I used 100% pure acetone as my solvent and it evaporate completely in less than a day and the Changa it produced is absolutely amazing. So now Instead of being nervous and not trying for a break through I take a few puffs of Changa to start cruising in the DMT space followed by a puff or 2 of crystal, it works wonders and does an awful lot for your nerves. So instead of blasting off its analogous to ascending swiftly, a lot less jarring, the only thing thats hard to get past using this method is the 1st hit which it kinda a rush. Trust me, you will love Changa, Ive been playing with crystal for about a month now and was amazed at how Changa is 10x more user friendly than crystal when I recently made some!!!!
Good luck