We've been in a bull run but investing in crypto isn't that easy,it can be damn stressful..most of us are usually obsessed I.e, checking our crypto wallets every half an hour if not minutes
Few ways to remove your emotion from investment
*Never invest into Bitcoin more than you can afford to lose
*Don't borrow to buy btc
*Vary from btc into alt coins
*Buy and trade btc in a trusted and legit platform i.e, binance..

My only advice is that when you feel stressed, you don't need to look at your crypto wallets all the time because it not going anywhere, just take a break and cool your head off because a stressful mind will just make things worse. Regarding your list, I have nothing to say to them because that is what you really supposed to do in order to avoid unnecessary circumstances but I have a little bit of concern about the 3rd one. Yes diversifying your stash will add more security to your funds but bear in mind that you should be careful in choosing alts as they are more volatile compared to bitcoin, thus this will be more stressful to handle.