Very insightful lesson learnt - I have learnt that the first way to identify a trading bias is through price action. Basically traders like you and me can view a chart and see if prices are generally rising or falling through the identification of a swing high or low. If prices are rising and the lows are advancing as well, traders should form a bias to buy. All these indicators allows us to make informative decisions.
NFA

The type of review for my investment/trades depends on the nature of the shares. I do a daily review for meme stocks but i only do monthly review for REITS and yearly review for ETFs. This allows me to keep my focus on long term investment because I am not bothered with price fluctuations for long term investments (ie. dividend generators) unless there is a huge deviation from its core business or significant divestment of its core assets. If so, that will spur me to either acquire more/sell off to cut losses.