The phrase "to stick to" means to continue doing something despite any difficulties or challenges that may arise. It implies perseverance and determination in pursuing a goal, even when things get tough.
The same way as most trader don't stick to just one fiat currency. (foxytrades.com)
The suspense bits are great, but horribly out of place, which makes one wonder why he didn't just stick to what he was good at. (hoopla.nu)
It is key here to understand, that there are many «strategies» that could produce returns beyond the market, if stuck to with resilience for the long term. (realsmartbeta.com)