The Boring Default
Pick one investment approach and stop choosing every month.
Most people lose more to indecision and switching than they ever lose to picking the wrong fund. Money sits in cash for years while they research.
Investment returns come mostly from time in the market and from cost. Both are hurt by changing your mind. A single low-cost, broadly diversified default, bought automatically, beats a better idea you implement late and abandon halfway.
Choose broad over clever
A global index fund is the default for a reason. It is not the highest return available. It is the one that does not require you to be right.
Check the fee, once
Broad index funds routinely charge well under a tenth of a percent. If you are paying more than about two tenths, look for a cheaper equivalent. Over one percent compounds into real money across decades.
Automate the buying
Same day every month, same amount. Deciding when to buy is the part that goes wrong.
Then stop looking
Set a calendar reminder to check once a year. Checking more often changes nothing except how you feel.
Go deeper
What the paid version adds to this one.
How the tax wrapper choice changes this, which matters more than the fund
What to do with a lump sum versus a monthly amount
The three moments when reviewing is genuinely justified
A filmed setup from empty account to first automatic purchase