I generally follow the advise that we should never put all our eggs in one basket.While i have some investments that are non-crypto-assets,i also share some money in cryptocurrencies and spread them across different coins.First i generally HODL and my investments are for long term.I keep about 50 per cent of my portfolio to ETH/BTC because I believe they will always be the main reference coins to rate other cryptos.I try to alternate the ETH/BTC balance based on the market trend.The other 50 per cent of my portfolio is made up of privacy coins (PIVX,monero,xvg) and some random low quality,low priced coin on coin market cap.