Cast your net wide
Definition 1 of 2
Pro Tip 1/3Opportunity Seeking
Used when advising someone to explore varied opportunities, not retain a narrow focus. 
To find your passion, cast your net wide across different activities and hobbies.
Pro Tip 2/3Maximize Chances
Emphasizes increasing the likelihood of success by trying more options. 
If you want to win a scholarship, cast your net wide by applying to many programs.
Pro Tip 3/3Strategy Suggestion
Suggests a strategic approach, often used in the context of achieving goals. 
To break into the market, we need to cast our net wide with our advertising.