I started my PPL in 1995 and worked my way up through the self improver route, struggling like hell with ATPL writtens especially. In the end I became a PPL instructor then CPL/IR instructor, PPL Examiner and currently fly 757s for JMC Airlines.
Every phase of my flying has been a struggle, the time it has taken, cost, severe dents in my confidence just at the wrong time, it moulds and shapes you into the pilot one will eventually become. Try to have a thick skin, if you have had a poor flight{and I have had my fair share} then erase it from your memory on the drive home, only to be remembered with embellishment on a boozy night off down-route.
Always remember 'nobody is that good' ,not even the instructors, and that means at any level.
ENJOY!