My weakness was, 'chasing losses' — it's recipe for disaster, you'll likely create more and more losses when chasing losses, it's like a hole that never ends. Overcome? Don't chase losses, whatever happens in a day, call it a day, and next day is fresh start.
Literally, chasing losses is one of the things that leads to confusion in gambling because you will begin to imagine how you lost so much money within a short period of time. Even when you are experiencing a losing streak, it is better to take a break from gambling instead of thinking that continues gambling will lead to your breakthrough. Any gambler who is wise will understand that gambling everyday will only attract more losses because it's almost same as chasing losses since you continue gambling the next day with the hope that you will be lucky and recover your losses from previous days.