Editing Contents Of A Cell

I have a spreadsheet wherein the column g keeps a chronological record of actions taken on a particular issue. Each time there is a new action taken on an issue, I go to the G column of the appropriate row, position my cursor at the beginning of the text already in that field, press CTRL Return twice, Press the up arrow twice and begin typing. I always add the date first followed by a colon,(e.g. 5/4, I bold that date and then position my cursor after the colon and begin typing the update to the status.

It occurs to me that all of the steps leading up to the typing of the issue could probably be autmated in a macro.