<p>I'd give 3/4 of my exes a second chance. It really does depend on how we broke up:</p>
<ol>
<li>I wasn't really ready for a boyfriend</li>
<li>We could never hang out enough since he lived 30 minutes away and neither one of us could drive. We didn't go to the same school, either.</li>
<li> This is the one I wouldn't date again. He gave me the worst date of my life & he's a supremely awkward guy.</li>
<li>Very complicated relationship and then he moved away. My first "true love."</li>
</ol>
<p>If I had another opportunity to be with any of those 3 guys, I'd only give them one more chance. After that it's just clearly not going to work out.</p>
<p>As far as friends and family - I'd give my friends 1-3 chances depending on what they've done. Family, ehh, you just have to put up with them.</p>
<p>Opportunities/experiences - I'll try most things once and I either like it or I don't. Occasionally I'll give a second chance to something I didn't like the first time and end up loving it (studying literature, canoeing, listening to the Shins, etc), but usually I just end up reminding myself why I didn't like it in the first place (eating pickled beets, attending church, playing soccer).</p>