How to squash commits in GIT

Sometimes our GIT Commits History could be really a big mess.
In this case, we should use the GIT SQUASH command to improve it.

There are several way to do it but the method that I prefer is this one:

• Run git reset --soft HEAD~3 to reset last 3 commits (change value after HEAD~ to determinate how many commits do you need to reset)
• Use git commit -a -m “An awesome commit message” and write a good comment about your code changes
• Push your code using git push --force-with-lease origin to rewrite the history on remote branch
• If you have merged any branch into your working branch you should remerge it after the squash