The best way is to train yourself, of course. However, you can get more speed for money.
TK868TBT is a JIS square taper bottom bracket, one of the lightest bottom brackets on the market with hollow axle made of titanium and with TOKEN ceramic TBT bearings. It is suitable for Brompton and a good investment for BWC2019.
This BB is design to offer a worry free direct replacement to the original BB.