where there's a will, there's a way

(figuratively) to have a strong stomach, to not be easily upset, to have nerves of steel, to have great composure

Alternative spelling of à cœur vaillant rien d'impossible

if you feel like it

in all sincerity, open-heartedly, wearing one's heart on one's sleeve

to be open-handed, to be generous

out of sight, out of mind

to grin and bear it, to make the best of a bad job, to put a brave face on it, to take the rough with the smooth

if you feel like it

(figuratively) to have a heavy heart, to be sad at heart, to have something weighing on one's heart, to be heavy-hearted