I've been selling whenever I catch one of my stocks above 60 NP/share.

For the past 3 months my portfolio has been going down because a lot of the companies have gone above 60NP/share. However I missed the stock which went above 60 this month, and so it has been growing back up again.

It is simply persistence and always making sure to buy the maxiumum amount of stock every day which will slowly grow your portfolio.

Oh, and don't stop selling your shares. Maybe raise the sell point just a little higher and stick to this sell point. (So if you're selling at 50-60, maybe start to only sell once it goes above 60 and not any less)

Do you really worry about having a low number of shares when you are getting so much profit from selling those shares? I don't.