The choice to move forward with an endeavor or to stop it in its tracks is entirely up to you, dear Leo. You can probably think of a few reasons on either side of this, and that is what makes it so difficult. If you stop short, simply based on a fear that you can only go so far, then you might wind up living with regret if something comes to light to show you it could have worked. But if you keep going, you will know that you have exhausted all efforts, and whether you succeed or not, you will know that you tried. Given your proud nature, Leo, the latter seems like the better choice.