The best way to choose coins for long term investment is to pick gems such as Bitcoin, Ethereum and Solana from top-20 listed on coinmarketcap, due their well established reputation with good historical record of performance. Additionally, we need to pinpoint the new sectors those are building narratives of advanced technology, such as Artificial Intelligence (AI) and Real world Assets (RWA), and invest in coins with potential to excel in the next bullish market.