A simple script that pops a notification at 10PM and reminds me to go-to-sleep.

com.dodo.gotosleep.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
  "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.dodo.gotosleep</string>
    <key>KeepAlive</key>
    <false/>
    <key>RunAtLoad</key>
    <false/>
    <key>UserName</key>
    <string>akshay</string>
    <key>Program</key>
    <string>/usr/local/bin/terminal-notifier</string>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/local/bin/terminal-notifier</string>
        <string>-sound</string>
        <string>default</string>
        <string>-message</string>
        <string>"It's sleepy time"</string>

    </array>
    <key>StartCalendarInterval</key>
    <array>
        <dict>
            <key>Hour</key>
            <integer>22</integer>
            <key>Minute</key>
            <integer>00</integer>
        </dict>
        <dict>
            <key>Hour</key>
            <integer>22</integer>
            <key>Minute</key>
            <integer>05</integer>
        </dict>
        <dict>
            <key>Hour</key>
            <integer>22</integer>
            <key>Minute</key>
            <integer>15</integer>
        </dict>
        <dict>
            <key>Hour</key>
            <integer>22</integer>
            <key>Minute</key>
            <integer>30</integer>
        </dict>
    </array>

</dict>
</plist>%

Uses https://github.com/julienXX/terminal-notifier

$ brew install terminal-notifier