Can I suggest not to reflect too toughly on yourself. I believe if the Company you are investing in is fundamentally sound, with great prospects on the horizon and is making all the right commercial decisions, then go ahead and invest.
I also believe a lot of the problems with the NZ sharemarket stem from it being so very small in size. This makes it possible for deep pocketed entities to influence what happens in a particular Company's share price. Also QOH, there seems to be a lot of very small investors/traders who are very risk averse and/or nervous nellies who have their finger on the sell trigger. They can also unwittingly (or wittingly) influence the share price. IMHO, these people should go back to a fixed interest investment as they do more damage than good. This is further demonstrated when you see investors/traders (buyers) hanging out for .001 gain.
I have had a good size holding in PEB for about the last 3 years and see no reason to sell. They tick the boxes for me and like all investments ... time will tell! At least PEB looks like it is going to make some decent money ... when the share price I am sure will then reflect (in that order) ... unlike others that have it round the wrong way at present.