That's completely fine... apparently if you upvoted your own posts 10 times a day (the maximum that would allow you to regenerate your Voting Power to 100% for the next day) then you'll double your account within 180 days (6 months).
The drawback is that there are some accounts on Steemit that take offense to exactly this activity and will flag people who do it 'too much'... but lots and lots of people do it.